# Questions API Release Log

Below is a list of Questions API releases and notes for each.

LTS Long Term Support, the most stable versions, features locked, recommended for new engagements

Latest Rolling release of latest features, recommended for dev only

Deprecated In limited use and not recommended for new engagements

Archived Version no longer available

Long Term Support releases are now available and should be used in Production environments.

## Version 2

#### Features

• Added the ability to move text after being written in the drawing Question type. This creates a better user experience.
• Added support for uploading images in the longtextV2 Question type. This allows students to combine both images and text in a single response.
• Added a new Text Tool into the drawing Question type, that allows users to add text into the canvas. This adds an essential element to the tool, allowing students to create drawings including typed text.
• Added better ARIA labels to the custom keypad dropdown in the Math keypad so that screenreader users will get full information of what they are selecting.
• Added support for video files in the ".WMV" (Windows Media Video) file format, in the file upload Question type. This provides better support for videos created on the Windows operating system.

#### Bug fixes

• Fixed a bug with Line Chart where the correct answer was not being displayed when in review mode, like all the other charts.
• Fixed a bug where videos were playing automatically, when that was not the intended behaviour.
• Fixed a bug with the different charts where the x-axis label would overlap after interacting with the chart in any way.
• Fixed a bug where the redo, undo and clear drawn marks features in the drawing Question type caused browser freezes or severe delays.
• Fixed a bug that caused simplefeatures inside sharedpassage rendering to fail when navigating between dynamic sections.

#### Features

• MathCore v1.73.1:
• Added support for ignore order within Chemistry formula containing equilibrium reaction.

#### Bug fixes

• Fixed a bug where number line plot Questions were causing console errors, when "show correct answers" was turned on in Item preview mode.
• Fixed a bug in which the choice matrix Question type was a bit slow to respond after users selected one of the options.

#### Features

• Added support for video files in the ".WMV" (Windows Media Video) file format, in the file upload Question type. This provides better support for videos created on the Windows operating system.

#### Polish

• Improvement: updated behavior when tabbing in and out of the Math keypad, so that when a keyboard user enters a symbol, uses shift-tab to move their cursor to the input, then used tab to return back to keypad they will be focused on the most recently entered symbol.
• Improvement: enhanced the stability of the record functionality in the audio Question type.

#### Polish

• Improvement: enhanced the stability of the record functionality in the audio Question type.

#### Bug fixes

• Fixed a bug, a regression where ruler simple features which were authored in Question Editor v3.77.0 or later would not display correctly, when using Questions API v2.151.2 or earlier.

#### Polish

• Improvement: enhanced the stability of the record functionality in the audio Question type.

#### Bug fixes

• Fixed a bug, a regression where ruler simple features which were authored in Question Editor v3.77.0 or later would not display correctly, when using Questions API v2.151.2 or earlier.

#### Polish

• Improvement: enhanced the stability of the record functionality in the audio Question type.

#### Bug fixes

• Fixed a bug, a regression where ruler simple features which were authored in Question Editor v3.77.0 or later would not display correctly, when using Questions API v2.151.2 or earlier.

#### Polish

• Improvement: enhanced the stability of the record functionality in the audio Question type.

#### Bug fixes

• Fixed a bug, a regression where ruler simple features which were authored in Question Editor v3.77.0 or later would not display correctly, when using Questions API v2.151.2 or earlier.

#### Polish

• Improvement: enhanced the stability of the record functionality in the audio Question type.

#### Bug fixes

• Fixed a bug, a regression where ruler simple features which were authored in Question Editor v3.77.0 or later would not display correctly, when using Questions API v2.151.2 or earlier.

#### Bug fixes

• Fixed a bug, a regression where ruler simple features which were authored in Question Editor v3.77.0 or later would not display correctly, when using Questions API v2.151.2 or earlier.

#### Features

• Added a configuration option which can be turned on for a consumer to enable a performance optimization for extremely large scale assessment (500k users concurrently).
• Added a close button for the Math keypad with floating display and improved its navigation using only the keyboard. Furthermore, announcements on its opening and closing have been added for screen reader users.
• Added new ruler images with predictable display resolution.
• Added a new attribute, disable_auto_link for longtextV2, when set to true, URLs entered by the user will not automatically become clickable-links.
• Added a new public method getAttemptedStatus() to get the attempt status of a Question, such as hasReachedMinLimit.
• Added an aria label for shorttext Question types, providing extra context for users.

#### Polish

• Improvement: Updated accessibility for the formula editor in math questions.
• Improvement: Updated accessibility with Voice Over to prevent the screen reader from announcing everything inside the calculator dialog.
• MathCore v1.74.0:
• Improved support in Learnosity math scoring, where if an expression includes an exponential we were not recognising equivalent expressions. For example, where e^x is included and can be factored, i.e. 5*x*e^x-5e^x, the equivalent expression 5e^x(x-1) will now be scored as correct.
• Improved support for trigonometry identities that were not working with more complicated arguments inside the trig functions. The following trig identities are supported: reciprocal, pythagorean, quotient (tangent/cotangent), cofunction, supplement, periodic when n=1, parity (even/odd), sum and difference, and product to sum.

#### Bug fixes

• Fixed a bug where the minimum selection notification message did not display in the resume state.
• Fixed the empty content in the correct answer list in the classification Question type.

#### Polish

• Improvement: Internal tooling update to improve error tracking and analytics.

#### Polish

• Improvement: Internal tooling update to improve error tracking and analytics.

#### Polish

• Improvement: Internal tooling update to improve error tracking and analytics.

#### Polish

• Improvement: Internal tooling update to improve error tracking and analytics.

#### Features

• Added support for the multiple choice Question type to allow users to set min_selection when multiple_responses: true.
• Added a new init option property skip_replay_animation which controls the existing skip_highlight_animation.

#### Polish

• Improvement: upgraded accessibility for drag and drop Question types, and JAWS compatibility.
• Improvement: upgraded drag and drop accessibility for the following Question types: Cloze Drag & Drop, Label Image With Drag & Drop, Classification and Matchlist. Now the focus will be ensnared into the dropped response instead of going back to the possibility list.
• Improvement: Keyboard navigation for distractor rationale is now better organised, with related content grouped together.
• Improvement: Drag and drop Questions will now announce a better message regarding how to interact with response container zones.

#### Bug fixes

• Fixed a bug, some visual defects in the multiple choice Question.

#### Bug fixes

• Fixed a bug where users were able to resume the previous test after their test time had exceeded max_time and time's limit_type is hard.

#### Bug fixes

• Fixed a bug in the multiple choice Question that caused a delay when selecting a valid answer if there were a lot of math options.
• Fixed a bug in which the content of the Calculator display was cut off in Internet Explorer 11 and Safari browsers when Questions API was set to a font size larger than normal.
• Fixed a bug in which the prime symbol couldn't be used to label a graph.
• Fixed a bug, some visual defects in the multiple choice Question.
• MathCore v1.36.0:
• Fixed a bug with scoring expressions with parentheses in equivSymbolic. Now 14(0.25) with be considered symbolically equivalent to 0.25(14).
• Added support for unicode equivalent of LaTeX Greek symbols. Now the unicode equivalent will validate to the corresponding LaTeX character.

#### Bug fixes

• Fixed a bug where the word count would increase when applying bold, italic or other inline formatting to the input text of the longtext V2 Question type.
• Fixed a bug in which pressing the Enter key wouldn't create a new line while typing math into the math essay Question type.

#### Bug fixes

• Fixed a bug where the word count would increase when applying bold, italic or other inline formatting to the input text of the longtext V2 Question type.
• Fixed a bug in which pressing the Enter key wouldn't create a new line while typing math into the math essay Question type.

#### Bug fixes

• Fixed a bug where the word count would increase when applying bold, italic or other inline formatting to the input text of the longtext V2 Question type.

#### Features

• Added a feature, whereby Questions API now can retry any failed network request three times before aborting the current operation. This greatly improves the stability of the API when the app is being used in an unstable network environment.

#### Polish

• Improvement: updated the accessibility of the audio Question type, making it work better with screen readers and also making it easier to navigate using the keyboard.

#### Bug fixes

• Fixed a bug where the undo and redo capabilities didn't work with math rendering.
• Fixed a bug where there were multiple Questions API instances on the page, that would cause a warning to be overridden (the warning that appears when the user is about to navigate away from the assessment).
• Fixed a bug where the word count would increase when applying bold, italic or other inline formatting to the input text of the longtext V2 Question type.
• Fixed a bug in the audio Question type where the "Tap to start playback" modal window did not begin playing audio when clicked.
• Fixed a bug where aria-roledescription was showing incorrect content in the association Question type dropzone area.
• Fixed a bug in which pressing the Enter key wouldn't create a new line while typing math into the math essay Question type.

#### Bug fixes

• Fixed a bug where Tokenhighlight Question Type does not render token with math content properly.
• Fixed a bug with the Shading Question Type that caused the browser to crash when navigating through it using VoiceOver.
• Fixed a bug that prevented the footer tooltip of charactermap and characterMathMap of longtextV2 Question types from showing up.
• Fixed a bug that threw an exception on the page, which occurred in the following situations: When we called the public method append after calling the public method reset, and When we called the public method reset immediately after calling the public method append.
• Fixed a bug in the customized Math Keypad that caused buttons added to a custom group to render with the wrong color.
• Fixed a bug that happened when customizing the Math Keypad that caused the backspace button not to render properly when added to a custom group.
• Fixed a bug with Mathcore that wouldn't allow authors to score by example using equivLiteral

#### Bug fixes

• Fixed a bug where Drawing Question type broke if the uploaded SVG image did not contain width and height.

#### Bug fixes

• Fixed a bug where Drawing Question type broke if the uploaded SVG image did not contain width and height.

#### Bug fixes

• Fixed a compatibility issue causing custom Questions to show an error and fail to load, when Angular's Zone.js library was included in the same page.

#### Features

• Improvement: internal changes to support better data storage.

#### Polish

• Updated internal libraries to maintain security standards.

#### Bug fixes

• Fixed a bug where Drawing Question type broke if the uploaded SVG image did not contain width and height.
• Fixed a bug in which the calculator's input field overflowed horizontally.
• Fixed a bug in which MathJax rendering crashed with a [Math Processing Error] message when clients have a combination of LaTeX/MathML equations and MathJax-rendered markup in their Items. This is due to MathJax assigning consecutive integer IDs to the elements it renders, and these IDs clashing with the IDs of the already rendered MathJax elements in the Item.
• Fixed a bug in custom Questions where correct answers weren't being displayed in review state.
• Fixed a bug when using Safari with VoiceOver where the user could no longer navigate to the page's text content after closing the Calculator feature.
• Fixed a bug where Drawing Question type broke if the uploaded SVG image did not contain width and height.

#### Polish

• Updated internal libraries to maintain security standards.
• Improvement: polished some UI text for the imageupload Question type.

#### Bug fixes

• Fixed a bug in custom Questions where correct answers weren't being displayed in review state.
• Fixed a bug where the classification Question type would display a "correct answers" box at the wrong time.
• Fixed a compatibility issue causing custom Questions to show an error and fail to load, when Angular's Zone.js library was included in the same page.
• Fixed a bug that caused the essay with rich text Question type's toolbar buttons to display in left-to-right style, with right-to-left languages.
• Fixed a bug that caused the essay with rich text Question type's text direction buttons to have no effect.
• Fixed a bug that caused the essay with rich text Question type's buttons for increase and decrease indentation to have no effect.
• Fixed a bug in which MathJax rendering crashed with a [Math Processing Error] message when clients have a combination of LaTeX/MathML equations and MathJax-rendered markup in their Items. This is due to MathJax assigning consecutive integer IDs to the elements it renders, and these IDs clashing with the IDs of the already rendered MathJax elements in the Item.

#### Polish

• Updated internal libraries to maintain security standards.
• Improvement: polished some UI text for the imageupload Question type.

#### Bug fixes

• Fixed a bug in custom Questions where correct answers weren't being displayed in review state.
• Fixed a compatibility issue causing custom Questions to show an error and fail to load, when Angular's Zone.js library was included in the same page.
• Fixed a bug where the classification Question type would display a "correct answers" box at the wrong time.
• Fixed a bug that caused the essay with rich text Question type's toolbar buttons to display in left-to-right style, with right-to-left languages.
• Fixed a bug that caused the essay with rich text Question type's text direction buttons to have no effect.
• Fixed a bug that caused the essay with rich text Question type's buttons for increase and decrease indentation to have no effect.
• Fixed a bug in which MathJax rendering crashed with a [Math Processing Error] message when clients have a combination of LaTeX/MathML equations and MathJax-rendered markup in their Items. This is due to MathJax assigning consecutive integer IDs to the elements it renders, and these IDs clashing with the IDs of the already rendered MathJax elements in the Item.
• Fixed a bug when using Safari with VoiceOver where the user could no longer navigate to the page's text content after closing the Calculator feature.

#### Polish

• Updated internal libraries to maintain security standards.
• Improvement: polished some UI text for the imageupload Question type.

#### Bug fixes

• Fixed a compatibility issue causing custom Questions to show an error and fail to load, when Angular's Zone.js library was included in the same page.
• Fixed a bug where the classification Question type would display a "correct answers" box at the wrong time.
• Fixed a bug that caused the essay with rich text Question type's toolbar buttons to display in left-to-right style, with right-to-left languages.
• Fixed a bug that caused the essay with rich text Question type's text direction buttons to have no effect.
• Fixed a bug that caused the essay with rich text Question type's buttons for increase and decrease indentation to have no effect.
• Fixed a bug in which MathJax rendering crashed with a [Math Processing Error] message when clients have a combination of LaTeX/MathML equations and MathJax-rendered markup in their Items. This is due to MathJax assigning consecutive integer IDs to the elements it renders, and these IDs clashing with the IDs of the already rendered MathJax elements in the Item.
• Fixed a bug when using Safari with VoiceOver where the user could no longer navigate to the page's text content after closing the Calculator feature.

#### Polish

• Updated internal libraries to maintain security standards.
• Improvement: polished some UI text for the imageupload Question type.

#### Bug fixes

• Fixed a compatibility issue causing custom Questions to show an error and fail to load, when Angular's Zone.js library was included in the same page.
• Fixed a bug where the classification Question type would display a "correct answers" box at the wrong time.
• Fixed a bug that caused the essay with rich text Question type's toolbar buttons to display in left-to-right style, with right-to-left languages.
• Fixed a bug that caused the essay with rich text Question type's text direction buttons to have no effect.
• Fixed a bug that caused the essay with rich text Question type's buttons for increase and decrease indentation to have no effect.
• Fixed a bug in which MathJax rendering crashed with a [Math Processing Error] message when clients have a combination of LaTeX/MathML equations and MathJax-rendered markup in their Items. This is due to MathJax assigning consecutive integer IDs to the elements it renders, and these IDs clashing with the IDs of the already rendered MathJax elements in the Item.
• Fixed a bug when using Safari with VoiceOver where the user could no longer navigate to the page's text content after closing the Calculator feature.

#### Polish

• Updated internal libraries to maintain security standards.
• Improvement: polished some UI text for the imageupload Question type.

#### Bug fixes

• Fixed a compatibility issue causing custom Questions to show an error and fail to load, when Angular's Zone.js library was included in the same page.
• Fixed a bug where the classification Question type would display a "correct answers" box at the wrong time.
• Fixed a bug that caused the essay with rich text Question type's toolbar buttons to display in left-to-right style, with right-to-left languages.
• Fixed a bug that caused the essay with rich text Question type's text direction buttons to have no effect.
• Fixed a bug that caused the essay with rich text Question type's buttons for increase and decrease indentation to have no effect.
• Fixed a bug in which MathJax rendering crashed with a [Math Processing Error] message when clients have a combination of LaTeX/MathML equations and MathJax-rendered markup in their Items. This is due to MathJax assigning consecutive integer IDs to the elements it renders, and these IDs clashing with the IDs of the already rendered MathJax elements in the Item.
• Fixed a bug when using Safari with VoiceOver where the user could no longer navigate to the page's text content after closing the Calculator feature.

#### Features

• Added a new init option show_distractor_rationale to enable or disable the distractor rationale user interface in activityInitParams.
• Added ARIA labels to classification cells, allowing screen readers to announce drop zones, and announce whether each drop zone is already populated, improving accessibility.
• Added the ability to customize the ARIA label in response containers of math Question types, improving accessibility.

#### Polish

• Improvement: polished some UI text for the imageupload Question type.
• Added more detail to error messages for Questions API.

#### Bug fixes

• Fixed a bug that caused the essay with rich text Question type's toolbar buttons to display in left-to-right style, with right-to-left languages.
• Fixed a bug that caused the essay with rich text Question type's text direction buttons to have no effect.
• Fixed a bug that caused the essay with rich text Question type's buttons for increase and decrease indentation to have no effect.
• Fixed a bug where the plaintext Question type's text would be hidden in review mode.
• Fixed a bug where the classification Question type would display a “correct answers” box at the wrong time.
• Fixed a compatibility issue causing custom Questions to show an error and fail to load, when Angular's Zone.js library was included in the same page.

#### Bug fixes

• Fixed a JavaScript exception thrown in "review" state when a custom Question did not include a validation object.
• Fixed a bug in which screen readers misread the degree symbol when rendered by MathJax in math Question types.

#### Bug fixes

• Fixed a JavaScript exception thrown in "review" state when a custom Question did not include a validation object.
• Fixed a bug with the Math Keypad in which borders between rows of buttons were not visible for some zoom configurations.
• Fixed a bug where the clear, redo and undo icons of the Drawing Question toolbar’s buttons had inconsistent sizing when compared with the other button icons.
• Fixed a bug, a rare race condition where a session could be moved to "Completed" status before final scoring had finished. See the help article on lifecycle for an overview of the lifecycle of a session.

#### Bug fixes

• Fixed a JavaScript exception thrown in "review" state when a custom Question did not include a validation object.
• Fixed a bug, a rare race condition where a session could be moved to "Completed" status before final scoring had finished. See the help article on lifecycle for an overview of the lifecycle of a session.

#### Bug fixes

• Fixed a JavaScript exception thrown in "review" state when a custom Question did not include a validation object.
• Fixed a bug, a rare race condition where a session could be moved to "Completed" status before final scoring had finished. See the help article on lifecycle for an overview of the lifecycle of a session.

#### Bug fixes

• Fixed a JavaScript exception thrown in "review" state when a custom Question did not include a validation object.
• Fixed a bug, a rare race condition where a session could be moved to "Completed" status before final scoring had finished. See the help article on lifecycle for an overview of the lifecycle of a session.

#### Features

• Added camera support to Chrome and Safari on iOS. Now users can take and upload pictures using their iOS devices.
• Added accessibility enhancements to the camera upload feature, such as adding a focus trap to the modal and improving the keyboard navigation.
• Added support to enable and disable autocorrect, autocapitalize and autocomplete HTML attributes, for the following Question types: Short Text, Plain text (essay), Essay with rich text, Add text to Image, and Fill in the blanks.
• Added attribute_overrides: {} support in Question Activity initOptions, to allow user override of specific attributes (spellcheck and instant_feedback) of Question data.
• Added scientific notation support for specifying the number of significant digits to the left of a decimal point.
• Added an option normalizeArithmetic for the equivLiteral scoring method to better support responses which are similar to the correct answer. For example, -(x/2) could now be validated the same as (-x)/2.
• Added ARIA label for integrals int.
• Added ARIA label for limits lim.
• Added ARIA labels for 'not similar' and 'not congruent' symbols.
• Fixed ARIA labels for units of measurement, e.g. 12 m/s will now be correctly announced as “12 meters per second”.

#### Polish

• Improvement: Updated the highlight Question type by filtering out duplicated points.
• Improvement: Increased the timeout for the client-side scoring of math Questions to ensure the scorer doesn't fail to validate answers on lower-end devices.

#### Bug fixes

• Fixed a bug with the Hotspot Question Type in which the focus state got lost when navigating the target regions with both the keyboard and the mouse.
• Fixed a bug with the Math Keypad in which borders between rows of buttons were not visible for some zoom configurations.
• Fixed a bug where the clear, redo and undo icons of the Drawing Question toolbar’s buttons had inconsistent sizing when compared with the other button icons.
• Fixed a bug in which the user didn't get any feedback if they accidentally denied camera access to the application. Now students get an error message with instructions on how to proceed to use the camera upload functionality (if they denied permissions for the application to access the device camera).
• Fixed a bug (regression) in v2.145.0 that caused JavaScript errors to be thrown in IE11 with some Fill in the Blanks Question types.
• Fixed a bug, a rare race condition where a session could be moved to "Completed" status before final scoring had finished. See the help article on lifecycle for an overview of the lifecycle of a session.

#### Bug fixes

• Fixed an bug that prevented some SVG images used with Image highlight Question types from displaying in Firefox.
• Fixed a bug where the Imagetool Feature had the customised value buttonicon set, it would show a large size icon instead of a thumbnail.
• Fixed a bug with the choice matrix Question type, where having more than ten Items in an assessment and math content inside the Questions would break the page and stop the Activity from loading.

#### Bug fixes

• Fixed a bug that caused Chrome tabs to crash when rendering zero-width characters in the LearnosityMath font.

#### Bug fixes

• Fixed a bug that caused Chrome tabs to crash when rendering zero-width characters in the LearnosityMath font.

#### Features

• Added a new public method, LearnosityApp.offline().push to allow the user to push their attempted offline assessment back to the server.
• Added a new public method, LearnosityApp.offline().getSession to allow the user to retrieve the stored session information from the device's indexedDB.
• Added aria-labels to the response areas of the following Question types: formulaV2, cloze formula, image cloze formula and formula essay. This improves accessibility for response areas and lays the groundwork for future accessibility innovations.

#### Bug fixes

• Fixed a bug where the simplechart Question type’s snap-to-grid feature did not support decimal numbers.
• Fixed a bug where the show all responses label bundle was missing.
• Fixed a bug where the orderlist Question type could not load the page in review mode, when automarkable was set to false.
• Fixed a bug that caused offline assessments from resuming on the Web, when using the same session_id that was used offline.
• Fixed a bug that caused the wrong offline assessment asset path to be synchronized on the server.
• Fixed a bug, when submitting an Activity in Offline mode that didn't contain a 'course_id' field, an error would be thrown in the console.
• Fixed a bug where public methods for the video player feature weren't working in Safari.
• Fixed a bug where the compass in the drawing Question type could still draw arcs in the preview state.
• Fixed a bug that prevented rendering unanswered rating Questions in review state.
• Fixed a bug where the fileupload Question type displayed a useless comma, that should have been deleted after the last entry in the supported type list.
• Fixed a bug that caused Chrome tabs to crash when rendering zero-width characters in the LearnosityMath font.
• Fixed a bug that prevented static methods like LearnosityApp.save from being called after the Questions API script was loaded.
• Fixed a bug with choice matrix Question type when having more than 10 Items in an Assessment and math content inside the questions it will break the page and stop the Activity from loading.
• Fixed a bug where equivSymbolic scored a fraction as correct when it was not.

#### Bug fixes

• Fixed a bug that caused Chrome tabs to crash when rendering zero-width characters in the LearnosityMath font.
• Fixed a bug that prevented users from modifying the table with actions like "delete column" or "insert row before/after" in the longtextV2 Question type.
• Fixed a bug where an image would display misaligned in the stimulus, if it was the last element in the stimulus content.
• Fixed a bug where the image cloze association Question type would display a “correct answers” box at the wrong time.
• Fixed a bug with simple shading, which was scoring incorrectly when the score was set to zero.

#### Bug fixes

• Fixed a bug where the image cloze association Question type would display a “correct answers” box at the wrong time.
• Fixed a bug where an image would display misaligned in the stimulus, if it were the last element in the stimulus content.
• Fixed a bug that prevented users from modifying the table with actions like "delete column" or "insert row before/after" in the longtextV2 Question type.
• Fixed a bug with simpleshading, which was scoring incorrectly when the score was set to zero.

#### Polish

• Improved support for error tracking.

#### Features

• Added support for Cloze Question type authoring and delivery in Arabic RTL (right-to-left) mode. This was done by fixing the border position for drag and drop possibility response groups.
• Added accessibility support to scribble, line and compass tools of the Drawing Question type.
• Added support for various file types (MATLAB, Altera Quartus, Verilog, Assembly, C, C++, .h, .v and .s) for the File Upload Question type.
• Added replay functionality to the drawing Question type. Now, during review mode, students and teachers can review how each shape was drawn.
• Added some contextual help in Math Keypad about the keyboard shortcuts and why they may be different depending the region.
• Added visibility change event to all features, for analytics purposes.

#### Polish

• Improvement: Made the font size bigger for the new symbols “not congruent” and “not similar”.

#### Bug fixes

• Fixed a bug where the video feature close captions panel was initially accessible by screen readers when it had not been activated.
• Fixed a bug with event counting, which was incorrect when uploading an image for the second time without annotations.
• Fixed a bug where the color picker dropdown menu would be closed suddenly, when using the TAB key navigate to the last color option.
• Fixed a bug where the user could not center a table in the stimulus, when manually adding the table-centered class name to the table element from source.
• Fixed a bug that prevented users from modifying the table with actions like "delete column" or "insert row before/after" in the longtextV2 Question type.
• Fixed a bug where an image would display misaligned in the stimulus, if it was the last element in the stimulus content.
• Fixed a bug with simple shading, which was scoring incorrectly when the score was set to zero.
• Fixed a bug with the Response Masking Setting in the multiple choice Question Type when multiple instances were included in the same assessment.
• Fixed a bug where the image cloze association Question type would display a "correct answers" box at the wrong time.
• Fixed a bug where the audio player used as a Simple Feature would break its style when used inside a match list Question type either in the stimulus list or possible responses.
• Fixed a bug with the drawing Question type where the default selected drawing tool would default into ‘Scribble’ mode, even when that tool was removed from the toolbar.
• Mathcore v1.71.0
• Fixed two bugs related to fractions in Learnosity Math for equivSymbolic. One case was incorrectly validating a fraction correct for a repeating decimal validation value. The other not recognising the simplest form when using a fraction for validation.
• Fixed a scoring issue in Learnosity Math for equivSymbolic that was incorrectly validating part of an expanded equation without needing the whole correct validation value.

#### Bug fixes

• Fixed a bug where the video feature close captions panel was initially accessible by screen readers when it had not been activated.

#### Bug fixes

• Fixed a bug where the Custom Question type does not have scorer JS provided. In this case, the Question should be launched as a non-validatable Question and automarkable should return false instead of null.
• Fixed a bug with the Image Annotation Uploader , where a loaded image was deleted and the "changed" event wasn't being called.

#### Bug fixes

• Fixed a bug where the Custom Question type does not have scorer JS provided. In this case, the Question should be launched as a non-validatable Question and automarkable should return false instead of null.
• Fixed a bug with the Image Annotation Uploader , where a loaded image was deleted and the "changed" event wasn't being called.

#### Polish

• Improved support for dynamically loaded resources from Learnosity servers.

#### Polish

• Improved support for dynamically loaded resources from Learnosity servers.

#### Features

• Added accessibility support for the Drawing Question type including the toolbar, select and erase drawing marks.

#### Polish

• Improved accessibility for our Video Player. Now, the time slider constantly shows its aria attributes, and the captions menu is fully accessible.
• Improved accessibility for the Response Masking Setting in the Multiple Choice Question Type. Now, more context has been added for screen reader users when masking or unmasking a response option.
• Improved the MathJax accessibility processing for better cross browser support, particularly on IE11.
• Improved accessibility by removing role="heading" from the drop responses area of the image drag and drop Question type. Screen readers will no longer announce the heading when navigating through the response areas.
• Improved accessibility by updating aria-label text editor inputs for the longText and longTextV2 Question types, in order to avoid screen readers repeating the stimulus.

#### Bug fixes

• Fixed a bug in the Scientific Calculator where the aria-label of the toggle to switch between "radians" and "degrees" would not be updated after clicking on it.
• Fixed a bug where the Custom Question type does not have scorer JS provided. In this case, the Question should be launched as a non-validatable Question and automarkable should return false instead of null.
• Fixed a bug with the Image Annotation Uploader, where a loaded image was deleted and the "changed" event wasn't being called.

#### Bug fixes

• Fixed a bug where clicking the Highlight Question color picker button on the toolbar, and the Rating button would submit the Activity.
• Fixed a bug in the Drawing Question type that made the compass too small if the image source dimensions were very large.
• Fixed a bug, a JavaScript error that was thrown when using the compass tool in the Drawing Question type on touch devices.
• Fixed a bug with the Image Annotations Upload dialog. When a loaded image was deleted, the event "changed" wasn't being called.
• Fixed a bug with the validate method, where the count of feedback attempts was not being recorded correctly. Also, added a new feedbackAttempt flag.

#### Bug fixes

• Fixed a bug with the validate method, where the count of feedback attempts was not being recorded correctly. Also, added a new feedbackAttempt flag.
• Fixed a bug with the image annotations upload dialog. When a loaded image was deleted, the event "changed" wasn't being called.
• Fixed a bug where clicking the Highlight Question color picker button on the toolbar, and the Rating button would submit the Activity.

#### Features

• Added a new option to the Hotspot Question type. This enables users to customize the focus state color, by letting them choose the color individually or globally as a default. For the Safari browser, in order to retain normal keyboard navigation behaviour with this fix, you will need to adjust Safari settings.
• Added a shortcut for the Math Keypad to allow users to enter a forward slash without it being converted to a fraction.

#### Bug fixes

• Fixed a bug where using MathML that contained alttext caused the assessment player to load indefinitely.
• Fixed a bug that made the compass too small if the image source dimensions were very large.
• Fixed a bug in which the Horizontal Keypad always matched the image size in the Cloze Math With Image Question type. This was particularly a problem when using very small images, causing the keypad not to be wide enough to contain all of the buttons and hence being harder to use.
• Fixed a bug that added double quotes to aria-labels in cloze text Question types.
• Fixed a bug with the compass tool in the Drawing Question type. When the user changed the uploaded image width and height manually with the wrong ratio, the compass could not be moved to the edge of the drawing area.
• Fixed a bug, a JavaScript error that was thrown when using the compass tool in the Drawing Question type on touch devices.
• Fixed a bug with the image annotations upload dialog. When a loaded image was deleted, the event "changed" wasn't being called.
• Fixed a bug with the validate method, where the count of feedback attempts was not being recorded correctly. Also, added a new feedbackAttempt flag.
• Fixed a bug with horizontal keypad where focusing away and back from a response zone caused the keypad to collapse in width.
• Fixed a bug where clicking the Highlight Question color picker button on the toolbar, and the Rating button would submit the Activity.
• Fixed a bug that prevented the Question instance from removing all events when calling the off public method without any arguments.
• Added title attributes to the Drawing Question toolbar button.

#### Bug fixes

• Fixed a bug that prevented the Question instance from removing all events when calling the off public method without any arguments.
• Fixed a bug in which the Horizontal Keypad always matched the image size in the Cloze Math With Image Question type. This was particularly a problem when using very small images, causing the keypad not to be wide enough to contain all of the buttons and hence being harder to use.
• Fixed a bug where using MathML that contained alttext caused the assess player to load indefinitely.
• Fixed a bug with the compass tool in the Drawing Question type. When the user changed the uploaded image width and height manually with the wrong ratio, the compass could not be moved to the edge of the drawing area.
• Added title attributes to the Drawing Question toolbar button.

#### Bug fixes

• Fixed a bug that prevented the Question instance from removing all events when calling the off public method without any arguments.
• Fixed a bug with the multiple choice Question type, where images were not being centered correctly.
• Fixed a bug where stimulus_list and possible_responses would be shuffled in the same order in the Association Question type when no validation object was authored.

#### Bug fixes

• Fixed a bug that prevented the question instance from removing all events when calling public method off without any arguments.
• Fixed a bug with the multiple choice Question type, where images were not being centered correctly.
• Fixed a bug where stimulus_list and possible_responses would be shuffled in the same order in the Association Question type when no validation object was authored.

#### Bug fixes

• Fixed a bug that prevented the question instance from removing all events when calling public method off without any arguments.
• Fixed a bug with the multiple choice Question type, where images were not being centered correctly.
• Fixed a bug where stimulus_list and possible_responses would be shuffled in the same order in the Association Question type when no validation object was authored.

#### Bug fixes

• Fixed a bug with Horizontal Keypad where focusing away and back from a response zone, caused the keypad to collapse in width.

#### Features

• Added a new Drawing Question type that allows students to use different drawing tools to draw on an image.
• Improved the accessibility of Matchlist Question type by adding aria live text and role description support, also using spoken math in aria instead of LaTeX.
• Improved accessibility for screen readers in Choice Matrix Question type. Now the numeration of each row is included in the aria-label.

#### Bug fixes

• Fixed a bug where moving or resizing the Line Reader Feature via arrow keys would not prevent assessment navigation.
• Fixed a bug where stimulus_list and possible_responses would be shuffled in the same order in the Association Question type when no validation object was authored.
• Fixed a bug with the multiple choice Question type, where images were not being centered correctly.
• Fixed a bug where the LaTex "cancel" symbol was not rendering properly in the response area of some drag and drop Questions.
• Fixed a bug when opening the Keypad inside a modal, with the Chemistry with Image Question type. The bug caused a height to be incorrectly added to the modal window, causing an unintended change to its size.
• Fixed a bug where the calculator was not returning focus back to the toggle button, in the Safari browser.
• Fixed a bug with rendering the horizontal math keypad. The width is now updated to be only wide enough to contain all rendered buttons (in cases where there were less than ten buttons in a row).
• Fixed a bug in Chemcore where equivLiteral was not ignoring trailing spaces in superscript text.
• Fixed a bug where the focus was being trapped inside cloze association and association Question types after a response was dropped in a dropzone.
• Fixed a bug with Cloze Dropdown question type when used in Question Editor in "Show Answer" mode, it triggered an error in console due to some missing validation on the element to focus.

#### Bug fixes

• Fixed a bug where authored responses without a value were considered correct if 'match_all_possible_responses' was set to true.
• Fixed bug that caused the input of shorttext and plaintext to render pasted RTF content incorrectly.

#### Features

• Added the line reader Feature type, a visual assistive tool that allows a user to view one line of text at a time.
• Added the ability to define custom aria labels for response containers in cloze text, cloze association, and cloze dropdown Question types.

#### Refactors

• Updated user interface and changed the library for the rating Question type.

#### Bug fixes

• Fixed bug that caused the input of shorttext and plaintext to render pasted RTF content incorrectly.
• Fixed various bugs with the ratings Question type, related to rich text rendering and the modal user interface.
• Fixed a bug that allowed users to dismiss the modal window when they were informed that their time was over. Now, as intended, they cannot dismiss it and they must submit the test.
• Fixed a bug, adding new behaviour where the system clears aria live text after a short interval, once a cloze association Question is no longer being interacted with, so that the aria live text isn't needlessly read out again when navigating with a keyboard.
• Fixed a bug with rendering the horizontal math keypad, updating the width to be only wide enough to contain all rendered buttons (in cases where there are less than ten buttons in a row).
• Fixed a bug where the Math keypad used inside a modal would remain opened after closing the modal window.
• Fixed a bug, preventing a false-positive error from being thrown when rendering the check answer button with the custom Questions.
• Mathcore v1.70.0
• Fixed a bug with equivSymbolic compareSides where it was not functioning as expected for inequalities.
• Added more comprehensive support in Learnosity Math for commutative property of multiplication. As equivLiteral ignores parenthesis, this was leading to issues where certain correct responses were not validating.
• Fixed a bug where responses authored without a value were scored as correct if match_all_possible_responses was set to true.

#### Bug fixes

• Fixed a bug in the Essay with Plain Text Question type, that increased the height of the text box area, every time a character was typed.

#### Bug fixes

• Fixed a bug in the Essay with Plain Text Question type, that increased the height of the text box area, every time a character was typed.

#### Bug fixes

• Fixed a bug in the Essay with Plain Text Question type, that increased the height of the text box area, every time a character was typed.

#### Features

• Improved the accessibility of cloze association Question types by adding aria live text and role description support, removing deprecated attributes, and using spoken math in aria instead of LaTeX.

#### Bug fixes

• Fixed a bug that caused the errorListener callback to be called multiple times each time we initialized a new instance of the Questions app.
• Fixed a bug in the essay with plain text Question type, that increased the height of the text box area, every time a character was typed.
• Fixed a bug with the Video Recorder Question Type in v2018.2.LTS that impeded the component, preventing it from loading properly.
• Accessibility label added to Multiple Choice Question type when entered in "review" state.
• Fixed a bug with the Formula Keypad, where the array button didn't have a title.
• Fixed a bug in which the buttons in the math keypad rendered the browser's native popover when hovered on, even when the showHints flag was explicitly turned off.
• Fixed a bug in which the Math Keypad symbol group names in the dropdown menu couldn't be customized for internationalization purposes. Following this change, clients can pass in custom labels for these symbol groups via Label Bundles in Questions API.
• Fixed a bug, that prevented the overwrite_warning attribute from working properly.
• Fixed a bug with the Math Keypad where when opened inside a modal window, caused it to be positioned incorrectly after switching the keyboard type.

#### Bug fixes

• Fixed a bug when switching between degrees and radians in the Calculator feature.
• Fixed a bug that caused uploads of CSV files to fail when using the fileupload Question type.
• Fixed a bug that caused drag-drop Items with duplicated content to disappear after moving them into a drop zone.
• Fixed a bug where Unicode support was not working in the ClozeDropDown Question type.
• Fixed a bug that caused the errorListener callback to be called multiple times each time we initialized a new instance of the Questions app.

#### Bug fixes

• Fixed a bug that caused the errorListener callback to be called multiple times each time we initialized a new instance of the Questions app.
• Fixed a bug when switching between degrees and radians in the Calculator feature.
• Fixed a bug that caused uploads of CSV files to fail when using the fileupload Question type.

#### Bug fixes

• Fixed a bug that caused the errorListener callback to be called multiple times each time we initialized a new instance of the Questions app.
• Fixed a bug when switching between degrees and radians in the Calculator feature.
• Fixed a bug that caused uploads of CSV files to fail when using the fileupload Question type.

#### Features

• Improved accessibility of choicematrix Questions.
• Improve accessibility of transcripts for Pearson audio Question types.

#### Bug fixes

• Fixed a bug that caused drag-drop Items with duplicated content from disappearing after moving them into a drop zone.
• Fixed a bug with the Cloze association Question type where validation icons would overlap long content in draggable Items.
• Fixed a bug in which the Image Highlight Question type was always being floated to the left even in RTL environments. This change allows for RTL customers to have this Question type rendered in the correct place.
• Enhanced the accessibility of the Multiple Choice Question type by wrapping all options with a role="group" element.
• Fixed a bug where double dollar signs ($$) were not treated as delimiters for inline latex. • Fixed a bug in which the record button of the record video Question type was not triggering the expected behavior when activated using the keyboard's spacebar key. • Fixed a bug when switching between degrees and radians in the Calculator feature. • Fixed a bug in which the focus automatically jumped to the "Record" button of the Video Record Question type once the Question loaded. • Fixed a bug in which the focus went back to the "Next" button after being pressed. The focus now goes back to the Item itself in order to avoid context changes. • Removed an unnecessary aria-pressed attribute from the Review Screen button in the Assess player. #### v2.134.3 – 30th April 2019Archived #### Bug fixes • Improved the clozedropdown Question type so that it ignores leading & trailing whitespace during validation. • Fixed a bug where the simplechart Question type put an exclamation mark (!) on top of correct responses when they matched initial values. #### v2.128.11 – 30th April 2019Archived #### Bug fixes • Improved the clozedropdown Question type so that it ignores leading & trailing whitespace during validation. • Fixed a bug where the simplechart Question type put an exclamation mark (!) on top of correct responses when they matched initial values. #### v2.122.16 – 30th April 2019Archived #### Bug fixes • Improved the clozedropdown Question type so that it ignores leading & trailing whitespace during validation. • Fixed a bug where the simplechart Question type put an exclamation mark (!) on top of correct responses when they matched initial values. #### v2.136.0 – 3rd April 2019Archived #### Features • Improved the horizontal keypad to support customizable symbols other than the number pad symbols. #### Bug fixes • Fixed a bug where the simplechart Question type scored the same value differently. • Fixed a bug where the simplechart Question type put an exclamation mark (!) on top of correct responses when they matched initial values. • Fixed a bug where $$ delimited LaTeX was not rendered in MathQuill.
• Improved the accessibility of the video recording Question type by forcing focus to land on the "record" button and providing better messages to screen readers.
• Fixed a bug where "block-keyboard" configured math keypads had a text overflow beneath the menu, when they had a lot of tooltip text.
• Mathcore v1.67.1
• Added support in mathcore for unicode degree symbol to be treated the same as the LaTeX \deg.
• Added support to ignore unicode \u200b (Zero width space). Previously if this invisible character was included in the validation value the student could not get a correct answer. Now mathcore will ignore this character and the student can get a correct score.
• Fixed an issue in mathcore where isSimplified was not correctly recognising simplified cases using \sqrt.
• Fixed an issue where negative fractions were not validating correctly using equivSymbolic and isSimplified.

#### Bug fixes

• Fixed a bug where the simplechart Question type scored the same value differently.
• Fixed a bug that prevented the calculator from being closed when clicking the close button on mobile devices.
• Fixed a bug where spaces would be ignored if you had entered a special character from the keypad as the last character in a Question.
• Fixed a bug that caused the clozeassociation Question type to fail in rendering the simple features after moving the dragged response to the possibility list.
• Fixed a bug that caused the image tool to disappear when using the full screen mode on small devices.
• Added support for arrow keys navigation to keep the focus inside the calculator Feature. This should also be applied to screen readers following the WAI-ARIA accessibility standards.

#### Bug fixes

• Fixed a bug that prevented the calculator from being closed when clicking the close button on mobile devices.
• Fixed a bug where spaces would be ignored if you had entered a special character from the keypad as the last character in a Question.
• Fixed a bug that caused the clozeassociation Question type to fail in rendering the simple features after moving the dragged response to the possibility list.
• Fixed a bug that caused the image tool to disappear when using the full screen mode on small devices.
• Added support for arrow keys navigation to keep the focus inside the calculator Feature. This should also be applied to screen readers following the WAI-ARIA accessibility standards.
• Mathcore v1.61.3
• Fixed an issue where negative fractions were not validating correctly using equivSymbolic and isSimplified.

#### Bug fixes

• Fixed a bug where spaces would be ignored if you had entered a special character from the keypad as the last character in a Question.
• Fixed a bug that caused the clozeassociation Question type to fail in rendering the simple features after moving the dragged response to the possibility list.
• Fixed a bug where the response for the numberlineplot Question type can still be changed by users after calling the public method disable(), also after calling the enable() method, the Question would be broken and the user could not change the response.

#### Bug fixes

• Fixed bug that caused the mcq with shuffle_options: true to be validated incorrectly.

#### Features

• Added support for arrow keys navigation to keep the focus inside the calculator Feature. This should also be applied to screen readers following the WAI-ARIA accessibility standards.
• Added a simplified horizontal layout to the Formula Keypad. It can be enabled by setting "horizontal_layout": true and applying the customization setting horizontalPad: ['0', '1', ...] in the Question JSON.
• Added stacked_fraction support in the simplechart Question type to allow authors to define the fraction labels on the X Axis of simple charts.

#### Bug fixes

• Fixed a bug that caused the image tool to disappear when using the full screen mode on small devices.
• Fixed an issue where the seconds of a session's dt_started time were being dropped, causing the started time to be rounded down to the minute.
• Fixed a bug where double dollar signs  were not treated as delimiters for inline LaTeX.
• Fixed a bug that caused the clozeassociation Question type to fail in rendering the simple features after moving the dragged response to the possibility list.
• Fixed a bug in IE11 where the association Question type would not work correctly whenever students dropped in a new response to replace the current response.
• Fixed a bug that prevented the calculator from being closed when clicking the close button on mobile devices.
• Fixed a bug where spaces would be ignored if you had entered a special character from the keypad as the last character in a Question.
• Fixed a bug with the accessibility of the assessment player subtitle, updated the color to comply with the required contrast ratio.
• Mathcore v1.66.0
• Added an option 'treat all letters as variables' which when selected will ignore any default interpretation of letters used as constants or units. For example, '7nm' is treated in Mathcore as 'seven nanometers' by default. The new flag will treat that as straight variables, therefore '7mn' (7 * m * n) will now validate equivSymbolically with '7nm' (7 * n * m).
• Fixed issue with equivSymbolic not behaving as expected with expressions consisting of two non-combinable (decimal) terms.

#### Bug fixes

• Mathcore v1.66.0
• Added an option 'treat all letters as variables' which when selected will ignore any default interpretation of letters used as constants or units. For example, '7nm' is treated in Mathcore as 'seven nanometers' by default. The new flag will treat that as straight variables, therefore '7mn' (7 * m * n) will now validate equivSymbolically with '7nm' (7 * n * m).
• Fixed issue with equivSymbolic not behaving as expected with expressions consisting of two non-combinable (decimal) terms.

#### Bug fixes

• Fixed a bug that caused the graph plotting Question type to incorrectly detect mouse coordinates when CSS transforms were applied to ancestor elements.
• Fixed a bug where the response for the numberlineplot Question type can still be changed by users after calling the public method disable(), also after calling the enable() method, the Question would be broken and the user could not change the response.
• Mathcore v1.61.2
• Fixed a bug in Mathcore where \sqrt{ rac{1}{x}} should equal \frac{1}{x^{\frac{1}{2}}}.
• Improved support in Mathcore to ensure all equivalence between inverse hyperbolic functions validate correctly.
• Fixed support in Mathcore for Algebraic operations involving trig terms.
• Fixed a bug where the sums of numbers to a variable power do not simplify. For example, (1+.0025)^n should validate in its simplest form as (1.0025)^n.
• Fixed a bug in Mathcore where equivSymbolic was not accepting equivalent expressions that include fractions when the expression is raised to a variable exponent.

#### Features

• Improved keyboard accessibility for the audio recording question (bubble style). When recording or playback begins, focus is now moved automatically to the first button inside the recording/playback bubble. The ESC key will close the bubble and return focus to the original button.

#### Bug fixes

• Fixed a bug that caused the page to scroll when drawing in the highlight Question type.
• Fixed a bug that caused the entire window to scroll when dragging the imagetool and calculator on iOS devices.
• Fixed a bug that caused the graph plotting Question type to incorrectly detect mouse coordinates when CSS transforms are applied to ancestor elements.
• Fixed a bug where the response for the numberlineplot Question type can still be changed by users after calling the public method disable(), also after calling the enable() method, the Question would be broken and the user could not change the response.

#### Bug fixes

• Fixed a bug where the line chart labels would be cut off when using the font sizes large, extra large and huge.
• Fixed a bug where inserting accent marks on Safari on the short text Question type by pressing Cmd+E followed by any vowel would result in an extra accent mark being inserted.
• Fixed a bug where a flash of extra width could be seen when the loading spinner appeared.
• Fixed a bug with a missing arrow in the simple chart.
• Fixed bugs (CSS conflicts) to handle tabs in Author API and Questions API.
• Fixed a bug that caused the sharedpassage Feature from being rendered multiple times through the append public method.
• Fixed a bug that caused the entire window to scroll when dragging the imagetool and calculator on iOS devices.
• Fixed a bug that caused the page to scroll when we draw in the highlight Question type

#### Bug fixes

• Fixed a bug where the line chart labels would be cut off when using the font sizes large, extra large and huge.
• Fixed a bug where inserting accent marks on Safari on the short text Question type by pressing Cmd+E followed by any vowel would result in an extra accent mark being inserted.
• Fixed a bug where a flash of extra width could be seen when the loading spinner appeared.
• Fixed a bug with a missing arrow in the simple chart.
• Fixed bugs (CSS conflicts) to handle tabs in Author API and Questions API.
• Fixed a bug that caused the sharedpassage Feature from being rendered multiple times through the append public method.
• Fixed a bug that caused the entire window to scroll when dragging the imagetool and calculator on iOS devices.
• Fixed a bug that caused the page to scroll when we draw in the highlight Question type

#### Features

• Added support for Questions API CSS styles to be more defensive with custom CSS style.
• Improvement to simplify the math rendering process: math is first rendered inside Questions and Features using the appropriate renderer, then global math is rendered.
• Added support for higher quality audio recordings (16-bit, 22050Hz) for the audio Question type. This enables more reliable processing of the audio by speech recognition software.
• Removed a global CSS rule that left-aligned text, in order to utilize the browsers' default behavior when rendering left or right-aligned text. This should better match expectations when customizing the look and feel of Questions and Features.
• Increased the maximum matrix size from 5x5 to 10x10 in formula Questions. This allows larger matrices to be used in math Questions and the math editor.

#### Bug fixes

• Fixed a bug with a missing arrow in the simple chart.
• Fixed bugs (CSS conflicts) to handle tabs in Author API and Questions API.
• Fixed an issue with the Audio Player Simple Feature bubble z-index. This would prevent the user from seeing and accessing the controls of the Audio Player when placed inside a Widget dropzone container.
• Refactored the audio dialogs, to use a unique template as well as a unique look and feel to allow the student to have a more consistent user experience.
• Fixed a bug where the number of feedback attempts (limiting the number of times a student can click the "Check Answer" button) was not stored and recalled when resuming a session.
• Fixed a compatibility issue with the Fullscreen API changes in Chrome 71.
• Fixed a bug where the ShortText Question Type still can input special characters when it has reached the defined max_length.
• Fixed a bug that causes the sharedpassage feature from being rendered multiple times through the public method append.
• Fixed a bug which caused the formulaessay Question to return true from its isAttempted() method after being focused and blurred without any content change.
• Fixed several bugs where the Gridded Question type did not recognize responses containing a decimal point as representing the value zero.
• Mathcore v1.65.0
• Added support for augmented matrices.
• Added support for equivSymbolic + isSimplified for radicals with indices higher than two.
• Added support for LaTeX 'array' to Mathcore.
• Fixed a bug with inequalities not evaluating correctly with negative numbers.
• Fixed equivalence of lists with or without braces.

#### Bug fixes

• Fixed a compatibility issue with the Fullscreen API changes in Chrome 71.
• Fixed a bug where the bgcolor attribute was being removed for table elements.

#### Bug fixes

• Fixed a bug where the bgcolor attribute was being removed for table elements.

#### Features

• Added support for Ruby characters in HTML to allow delivery of pronunciation guidance to students learning languages with logographic characters such as Chinese, Japanese or Korean.
• Added a new symbols group, "arrays", to the formula Question keypad. This group contains two new symbols, "system of equations/inequalities" and "multi-line equation". Basic support for the LaTeX array environment has been added to MathQuill in order to support this.
• Added lowercase characters μ (mu) and ρ (rho) to the Greek symbols group in the formula Question keypad.

#### Bug fixes

• Fixed a bug where a flash of extra width could be seen when the loading spinner appeared.
• Fixed a bug where the line chart labels would be cut off when using the font sizes large, extra large and huge.
• Fixed a bug where the videoplayer would not load videos on initialization.
• Fixed a series of Accessibility issues with the Calculator feature in both their "Basic" and "Scientific" variants:
• Fixed the temporary loss of focus when tabbing into the Rad/Deg button on the Scientific calculator.
• When opened, focus now moves immediately to the close button.
• When closed, focus now returns back to the triggering element.
• The user can no longer tab outside of the Calculator when open.
• Fixed a bug where the bgcolor attribute was being removed for certain HTML elements.
• Fixed a bug where inserting accent marks on Safari on the Short Text Question type by pressing Cmd+E followed by any vowel would result in an extra accent mark being inserted.
• Mathcore v1.64.0
• Fixed a bug with isExpanded method so it will validate additive terms to powers greater than 5.
• Added support in mathcore to ignore trailing commas. For example in set notation if a user adds a comma after the last value the response will still validate correctly, i.e. { 1, 2, 3, 4, } will validate to the correct response { 1, 2, 3, 4 }.
• Fixed a bug where is Simplified scoring method was validating the original expression to be simplified as correct.
• Polished the preview and review modes for the selected Question types: highlight, clozeassociation, imageclozeassociationV2, orderlist, numberlineplot, imageupload and fillshape.

#### Bug fixes

• Added support for Ruby characters in HTML to allow delivery of pronunciation guidance to students learning languages with logographic characters such as Chinese, Japanese or Korean.
• Fixed a bug that removed the responses' index in clozeformula, clozechemistry, imageclozeformula, and imageclozechemistry Question types when we called the disable method.
• Fixed a bug with some MathML Tags being removed when sanitizing some content. They have now been added to the supported Tags.
• Fixed a bug where Simple Features inside draggable possible responses would disappear when moved to a different response container.
• Improved the compatibility of classification Question type scoring to handle legacy validation data.
• Fixed a series of Accessibility issues with the Calculator feature in both their "Basic" and "Scientific" variants:
• Fixed the temporary loss of focus when tabbing into the Rad/Deg button on the Scientific calculator.
• When opened, focus now moves immediately to the close button.
• When closed, focus now returns back to the triggering element.
• The user can no longer tab outside of the Calculator when open.

#### Bug fixes

• Fixed a bug that removed the responses' index in clozeformula, clozechemistry, imageclozeformula, and imageclozechemistry Question types when we called the disable method.
• Fixed a bug with some MathML Tags being removed when sanitizing some content. They have now been added to the supported Tags.
• Improved the compatibility of classification Question type scoring to handle legacy validation data.

#### Features

• Added support for skip_highlight_animation flag. This flag, when set to true, will skip the animation of the highlight Question type when Questions API is initialized in review state. However, the animation will still be visible when the user clicks on the play button.

#### Bug fixes

• Fixed recognition of Microsoft Publisher (.pub) files by the fileupload Question type.
• Fixed a case where Simple Features inside draggable possible responses would disappear when moved to a different response container.
• Fixed a bug where the Tokenhighlight Question Type showed the wrong validation border colors.
• Fixed an issue with some MathML Tags being removed when sanitizing some content. They have now been added to the supported Tags.
• Fixed a bug that caused submit_over_limit to not work properly with the longtextV2 Question type
• Fixed a bug that removed the responses' index in clozeformula, clozechemistry, imageclozeformula, and imageclozechemistry Question types when we called the disable method.
• Fixed a bug that caused the last number on the axis of the graphplotting Question type to disappear.

#### Bug fixes

• Fixed a bug that caused submit_over_limit to not work properly with the longtextV2 Question type.
• Fixed a bug that prevented the formula Question type from returning the highest possible score, when valid_response and alt_responses have the same correct answer value.
• Fixed a bug where overwriting an existing recording for the audio Question type would result in silence being recorded instead of sound when using Safari 12 on MacOS. A new confirmation dialog will now be displayed when the overwrite_warning option is set to true.
• Fixed a bug where the audio recording Question's current position indicator would jump around unpredictably in Safari 12.
• Fixed bugs that caused the public method resetValidationUI to fail in clearing the suggested answers list.
• Fixed the vertical alignment of \sigma expressions when using the MathQuill math renderer.
• Fixed a bug that caused the last number on the axis of the graphplotting Question type to disappear.
• Fixed recognition of Microsoft Publisher (.pub) files by the fileupload Question type.

#### Bug fixes

• Fixed a bug that caused submit_over_limit to not work properly with the longtextV2 Question type.
• Fixed a bug that prevented the formula Question type from returning the highest possible score, when valid_response and alt_responses have the same correct answer value.

#### Bug fixes

• Fixed an issue preventing uploads of unrecognised file types on some operating systems.
• Fixed a bug that prevented the formula Question type from returning the highest possible score, when valid_response and alt_responses have the same correct answer value.
• Fixed a bug where changing to fullscreen mode in an assessment caused the volume slider on audio recording questions and audio player features to be inaccessible by the user.
• Fixed the vertical alignment of \sigma expressions when using the MathQuill math renderer.
• Fixed a bug where the fileupload Question type would show an uploading state indefinitely, when multiple files were selected to be uploaded at once.
• Fixed a bug where overwriting an existing recording for the audio Question type would result in silence being recorded instead of sound when using Safari 12 on MacOS. A new confirmation dialog will now be displayed when the overwrite_warning option is set to true.
• Fixed a visual bug with the suggestedAnswers for numberline Question type not being rendered in the exact position.
• Fixed several minor bugs with the video Question type.
• Fixed a bug on touchscreen devices where draggable possible responses would remain selected after moving them.
• Fixed a bug where the audio recording Question's current position indicator would jump around unpredictably in Safari 12.
• Fixed a bug where the longtextV2 Question's word count label was displaying the word count, even when the word count option was unticked.
• Fixed bugs that caused the public method resetValidationUI to fail in clearing the suggested answers list.
• Fixed a bug in fillshape that threw an exception in the console and prevented the suggested answer list from being visible.

#### Bug fixes

• Fixed a bug where sharedPassages math renderer would be overriden in some cases and therefore not applied correctly.
• Fixed a bug where inserting accent marks on Safari on the Cloze Text Question type by pressing Cmd+E followed by any vowel would result in an extra accent mark being inserted.
• Fixed a bug where the Create Table and Edit Table modals in the Essay with rich text Question type were rendered in an incorrect position in two-column layouts.
• Fixed a bug where the Imageclozetext Question type input box placeholder value was broken when it had more than one word.
• Fixed a bug where copy-pasting content was not possible on the Cloze Math Question type when used on Firefox on a Windows device.
• Fixed a bug with the formula keypad where certain touch devices would trigger the same input twice instead of once.
• Fixed a bug where the fileupload Question type would show an uploading state indefinitely, when multiple files were selected to be uploaded at once.
• Fixed a bug in fillshape that threw an exception in the console and prevented the suggested answer list from being visible.
• Fixed a bug that caused an unwanted pair of curly braces "{}" to be added to the LaTeX output of the subscript symbol in formula Questions.
• Fixed a visual bug with the suggestedAnswers for numberline Question type not being rendered in the exact position.
• Fixed an issue preventing uploads of unrecognised file types on some operating systems.
• Removed a CSS rule that was causing the HTML unordered list ul and ordered list ol attribute types to be ignored.

#### Bug fixes

• Fixed a bug with the formula keypad where certain touch devices would trigger the same input twice instead of once.
• Fixed a bug that caused an unwanted pair of curly braces "{}" to be added to the LaTeX output of the subscript symbol in formula Questions.
• Fixed an issue preventing uploads of unrecognised file types on some operating systems.
• Fixed a bug where sharedPassages math renderer would be overriden in some cases and therefore not applied correctly.
• Fixed a bug where inserting accent marks in Safari with the Cloze Text Question type by pressing Cmd+E followed by any vowel would result in an extra accent mark being inserted.
• Fixed a bug where copy-pasting content was not possible on the Cloze Math Question type when using Firefox on a Windows device.
• Fixed a bug where the Create Table and Edit Table modals in the Essay with rich text Question type were rendered in an incorrect position in two-column layouts.
• Fixed a bug where the Imageclozetext Question type input box placeholder value was broken when it had more than one word.
• Fixed a bug in fillshape that threw an exception in the console and prevented the suggested answers list from being visible.

#### Bug fixes

• Fixed a bug where audio Question Types would show a missing device error and not start on Safari 12 for MacOS.

#### Bug fixes

• Fixed a bug where audio Question Types would show a missing device error and not start on Safari 12 for MacOS.

#### Bug fixes

• Fixes bug that prevents users from creating polygon element in graphplotting question type when clicking on the initial point.

#### Features

• Upgraded the base library of our Graphing Questions to benefit from enhancements in responsive behaviour and touch device interaction.
• Added to the Video Player feature, providing support for reloading a video if it is not available on the first try.
• Add reset event which will be triggered when questionApp.reset() is called

#### Features

• Added support for iPad and iPhone to the video recording Question type.
• Added a feature for the video player to handle starting video playback at a specific time within the video, specified with URL parameters.
• Added support in spokenmath for two new math symbols: material conditional ⇒ and material equivalence ⇔ to the math keypad.
• Mathcore v1.61.0
• Added support in mathcore for Leibniz notation in differentiation. This will ensure, for example, that dx and dy are considered as single variables.

#### Bug fixes

• Fixed a bug that caused content inside the scrollablepassage feature to be invisible when being used on iOS 10 devices.
• Improved the stability of the audio recorder Question type on mobile devices.
• Fixed a bug where entering double quotes into a math formula within the stimulus results in subsequent HTML not being rendered correctly.
• Fixed a bug that caused auto-generated math content from being cleared when the formula input's focus was removed.
• Provided a better description for formula Question types when these Question types are validated.
• Fixed a bug where ImageclozeassociationV2 did not render math properly in the alt_response tab in Question Editor.
• Fixed a bug where draggable Items were hidden when dragged over other Questions in the same Item.
• Fixed a bug where dynamic content variable names that contained spaces or math function names would render incorrectly.
• Fixed a bug that caused the formulaV2 Question type to use the MathQuill engine to render math content during review state, when no math_renderer engine was defined.
• Fixed a bug that had TextHelp read orderlist options as a single word, rather than as separate options.
• Fixed a bug for the Microsoft Edge browser, where it would report a font-face loading error in the console when rendering MathJax.
• Improved the SpokenMath text string generation:
• The use of the word times for equations containing parens,
• Infinite repeating decimals: We now correctly describe 0.\overline{4} as "0 point repeating 4",
• Decimals with a trailing zero: We now correctly describe 0.60 as "0 point 6 0" instead of "0 point 60",
• Measure of angle: \measuredangle is now described as "measure of angle",
• Singular ordinal fractions  frac{1}{9} is now correctly described as "1 ninth" rather than "1 ninths",
• Mixed numbers are now correctly described as "and" so 3\frac{4}{5} is now "3 and 4 fifths" instead of "3 plus 4 fifths", and
• Unary plus: where +10 is now correctly described as "plus 10" rather than "10".
• Mathcore v1.61.0
• Fixed a bug where the sums of numbers to a variable power do not simplify. For example, (1+.0025)^n should validate in its simplest form as (1.0025)^n,
• Fixed a bug with equivSymbolic and algebraic substitution, and
• Fixed a bug with the square root of 1/x where \sqrt{\frac{1}{x}} should equal \frac{1}{x^{\frac{1}{2}}}.

#### Bug fixes

• Fixed a bug that caused Questions API initialization to fail when render_with_captured_questions: true is used in "resume" state.
• Fixed a bug that caused errors with assessment navigation when render_with_captured_questions: true is used in "resume" state.
• Fixed the unattempted state of the Rating Question Type so that it appears blank instead of highlighting the first option.
• Fixed a bug where tooltips for buttons in the right region would be cut off when long label text was used.
• Fixed a bug affecting Firefox and Safari where math elements in question stimulus had an unnecessary bottom margin applied when an ancestor element was focused.
• Fixed a bug that caused the image tag to malfunction when double quote " was used in alt or title attributes.
• Fixed several minor bugs with the Video Question Type.

#### Bug fixes

• Fixed a bug that caused content inside the scrollablepassage feature to be invisible when being used on iOS 10 devices.
• Improved the stability of the audio recorder Question type on mobile devices.
• Fixed a bug where entering double quotes into a math formula within the stimulus results in subsequent HTML not being rendered correctly.
• Fixed a bug that caused auto-generated math content from being cleared when the formula input's focus was removed.
• Provided a better description for formula Question types when these Question types are validated.
• Fixed a bug where ImageclozeassociationV2 did not render math properly in the alt_response tab in Question Editor.
• Fixed a bug where draggable Items were hidden when dragged over other Questions in the same Item.
• Fixed a bug where dynamic content variable names that contained spaces or math function names would render incorrectly.
• Fixed a bug that caused the formulaV2 Question type to use the MathQuill engine to render math content during review state, when no math_renderer engine was defined.
• Fixed a bug that had TextHelp read orderlist options as a single word, rather than as separate options.
• Fixed a bug for the Microsoft Edge browser, where it would report a font-face loading error in the console when rendering MathJax.
• Added support in spokenmath for two new math symbols: material conditional ⇒ and material equivalence ⇔ to the math keypad.
• Improved the text string generation
• The use of the word times for equations containing parens.
• Infinite repeating decimals
• Decimals with a trailing zero
• Measure of angle
• Singular ordinal fractions
• Mixed numbers
• Unary plus

#### Bug fixes

• Fixed a bug that prevented the overflow:auto containers from scrolling, when dragging the responses of dragdrop Question types to the top or bottom edges of their containers.
• Fixed a bug where the Numberline Question type showed incorrect suggested answers.
• Fixed a bug where the clozeassociation Question type's wordwrap option does not work in the response container.
• Fixed a bug that caused the length of the clozeassociation response zone to be calculated using LaTeX code instead of rendered math.

#### Bug fixes

• Fixed a bug that caused content inside the scrollablepassage feature to be invisible when being used on iOS 10 devices.
• Improved the stability of the audio recorder Question type on mobile devices.
• Fixed a bug where entering double quotes into a math formula within the stimulus results in subsequent HTML not being rendered correctly.
• Fixed a bug that caused auto-generated math content from being cleared when the formula input's focus was removed.
• Provided a better description for formula Question types when these Question types are validated.
• Fixed a bug where ImageclozeassociationV2 did not render math properly in the alt_response tab in Question Editor.
• Fixed a bug where draggable Items were hidden when dragged over other Questions in the same Item.
• Fixed a bug where dynamic content variable names that contained spaces or math function names would render incorrectly.
• Fixed a bug that caused the formulaV2 Question type to use the MathQuill engine to render math content during review state, when no math_renderer engine was defined.
• Fixed a bug that had TextHelp read orderlist options as a single word, rather than as separate options.
• Fixed a bug for the Microsoft Edge browser, where it would report a font-face loading error in the console when rendering MathJax.
• Added support in spokenmath for two new math symbols: material conditional ⇒ and material equivalence ⇔ to the math keypad.
• Improved the text string generation
• The use of the word times for equations containing parens.
• Infinite repeating decimals
• Decimals with a trailing zero
• Measure of angle
• Singular ordinal fractions
• Mixed numbers
• Unary plus

#### Bug fixes

• Fixed a bug that caused Questions API initialization to fail when render_with_captured_questions: true is used in "resume" state.
• Fixed a bug that caused errors with assessment navigation when render_with_captured_questions: true is used in "resume" state.
• Fixed a bug where the Rating Question Type would not highlight the selected response in "review" state.
• Fixed the unattempted state of the Rating Question Type so that it appears blank instead of highlighting the first option.
• Fixed a bug where tooltips for buttons in the right region would be cut off when long label text was used.
• Fixed a bug affecting Firefox and Safari where math elements in question stimulus had an unnecessary bottom margin applied when an ancestor element was focused.
• Fixed a bug that caused the image tag to malfunction when double quote " was used in alt or title attributes.

#### Features

• Added two new math symbols: left square bracket [ and right square bracket ] to the math keypad.

#### Bug fixes

• Fixed a bug where placing Items within scrollable passages in legacy columns in Activities on an iPad to not render.
• Fixed an issue where the calculator feature would always open above its associated button on smaller browser window sizes.
• Fixed a bug where draggable Items would lose focus when scrolling on iOS devices.
• Fixed a bug where the dynamic content Question does not save the response value from the first attempt.
• Fixes bug that causes imageclozeassociationV2 question type to fail to render the stored dynamic content attempts during review mode.
• Fixed a bug that caused math content to render improperly when the new public methods dynamics.nextAttempt() or dynamics.previousAttempt() were called.
• Fixed a bug with the public method  setScrollablePassagesContextHeight which was not resetting the size of the scrollablepassage to automatic when content was used as an argument of the public method.
• Fixed a bug that caused custom Question and customfeature that did not have the js attribute defined to block other Questions and Features from being rendered properly.
• Fixed a bug where the Cloze Association default response container style was broken when clicking the Try Again button.
• Fixed a bug where calling Try Again would consistently return options in the same order across refreshes on the following Question types: Multiple Choice, Choice Matrix (standard and inline), Classification, Cloze Association, Association and Image Cloze Association. This fix forces the correct answer to be in an unpredictable, random order on every single attempt.
• Fixed a bug where the audio player (simple feature) styling will be broken by text-indent when its type is displayed as text.

#### Bug fixes

• Fixed a bug where Questions API would crash when the correct answers list for some legacy classification Questions was shown.
• Fixed an issue where the calculator feature would always open above its associated button on smaller browser window sizes.
• Fixed a bug where Classify, Match and Order Question types would lose focus when scrolling on iOS devices.
• Fixed a bug where the dynamic content Question does not save the response value from the first attempt.
• Fixed a bug that caused imageclozeassociationV2 Question type to fail to render the stored dynamic content attempts in review mode.
• Fixed a bug that caused math content to render improperly when the new public methods dynamics.nextAttempt() or dynamics.previousAttempt() were called.
• Fixed a bug with the public method setScrollablePassagesContextHeight which was not resetting the size of the scrollablepassage to automatic when content was used as an argument of the public method.
• Fixed a bug where the audio player (simple feature) styling will be broken by text-indent when its type is displayed as text.
• Fixed a bug where calling Try Again would consistently return options in the same order across refreshes on the following Question types: Multiple Choice, Choice Matrix (standard and inline), Classification, Cloze Association, Association and Image Cloze Association. This fix forces the correct answer to be in an unpredictable, random order on every single attempt.

#### Bug fixes

• Fixed an issue with internationalization labels not applying to Image Highlight Question types.
• Fixed an issue where opening the Calculator feature could cause the page position to jump to the top of the page.
• Added unique ID to sharedPassages taking into account occurrences of the same passage across multiple sections. This fix makes passages unique to their section.
• Fixed a bug that causes custom Question type from calling the validate event before the ready event is triggered in review mode.
• Fixed an issue with Basic Extended calculator where the % function was inconsistent with the existing Scientific Calculator.
• Mathcore v1.59.0
• Added support for primes as a variable character.
• Added use of rules in "trig" identities.

#### Bug fixes

• Fixed an issue with internationalization labels not applying to Image Highlight Question types.
• Fixed an issue where opening the Calculator feature could cause the page position to jump to the top of the page.
• Fixed a bug that causes custom Question type from calling the validate event before the ready event is triggered in review mode.
• Fixed an issue with Basic Extended calculator where the % function was inconsistent with the existing Scientific Calculator.

#### Features

• Added an invisible character for texthelp support in matchlist. this will help screen-reading software process the words on the page.
• Added an option of splitting the js property in custom Questions to Question and scorer within one object.

#### Bug fixes

• Removed a console error when reviewing the correct answer on the simple shading Question type.
• Fixed a bug where the sort list Question type shows the wrong stimulus list Item when resuming responses.

#### Features

• Added support for LTS versions
• v2018.1.LTS is released

#### Features

• Added labelBundle init option support for Math Keypad, so that the description of symbols and the keyboard name can be overwritten for internationalization.
• Added a new public method to the Question methods. resetValidationUI clears the validation style which is applied to a Question when "Check Answers" is clicked or the validate method is called.

#### Bug fixes

• Fixed a bug causing a JavaScript exception to be thrown when opening a legacy, (non-react) classification Question in review mode, where the response contains at least one empty cell.

#### Features

• Improved screenreader accessibility in the orderlist Question type (React.js version).
• Added image alternative text and image title attributes to shading image and background image respectively to Simple shading Question Type.

#### Bug fixes

• Fixed a bug with MathML content being read twice by some screenreaders, caused by an incorrect accessibility implementation.
• Fixed a bug in Question Editor with the videoPlayer Feature throwing an exception when removing the URL from the input, which was preventing the user from continuing their authoring.
• Fixed a bug where the volume control slider does not disappear after the audio player has finished playing.
• Fixed a bug that would cause custom Question types to lose the response revision number on change.

#### Bug fixes

• Fixed a bug where Highlight Question Type should show not allowed cursor instead of the pointer (hand) cursor when the buttons on the toolbar have the disabled attribute. This behaviour more closely follows what users expect to see.

#### Features

• Added support for text help attributes and elements in authoring. These attributes and elements were previously being stripped due to our policy of whitelisting permitted attributes and elements.
• Added support for caching public methods calls in Questions API.
This reduces the need to use readyListener to call a method.
Example: const questionsApp = LearnosityApi.init(...); questionsApp.disable();
We also added support for .on, .off and .once public methods on the app instance.
• Updated default timestamp expiry for request signatures to 7 days.

#### Bug fixes

• Fixed a bug in some circumstances in IE11, where the audio feature was preventing Question Editor modal windows from closing, making the whole API unusable.
• Fixed a bug that throws an exception in all formula Question types when the user tries to tab through the keyboard. This issue only happens when no keyboard symbols group is set.
• Fixed a bug where sharedpassage Feature type with inline HTML tags in heading content, such as strong or b or em, was rendered as plain text instead of formatted HTML.
• Fixed a bug where tokenhighlight Question type showed attempted status in assessment review mode.
• Fixed a bug that prevents tokenhighlight Question type from being rendered in review state if there is no valid validation setup.
• Fixed a bug where the tokenhighlight Question would not be affected by the disable() public methods.
• Mathcore v1.57.0
• Fixed a bug where e^x+4 was not scoring correctly with \abs{e^x+4} in equivSymbolic validation method.
• Fixed a bug with square root where \sqrt{\frac{1}{x}} was not scoring correctly with \frac{1}{\sqrt{x}} in equivSymbolic validation method.
• Fixed a bug in ratios where fractions were not being scored correctly with the equivSymbolic validation method.
• Fixed a bug where improper mixed fractions (for example, 1\frac{5}{2}) were being scored as correct with the equivSyntax validation method. Use of improper mixed fractions will now be scored as incorrect.

#### Features

• Update sharedpassage to ensure simple feature can be rendered properly across multiple sections.
• Improved the labelBundle settings to be part of the initOptions of Questions API instead of being an argument of LearnosityApp.init, to make setting up labelBundle easier for developers.
• Added the ability to set the width of the possible response zone in the Image Drag & Drop Question type. When setting either the left or right placement of the ui_style.possibility_list_position the width can be configured with ui_style.possibility_list_width to better manage the possible response content.
• Improved accessibility for graphplotting Question type and numberlineplot Question type by changing the hover color of the graphing elements when delete mode is active.

#### Bug fixes

• Fixed a bug that stops custom Question type from being validated if the canValidate method was not defined by Scorer of the custom Question.
• Fixed a bug that broke the layout of tokenhiglight Question type when is_math was set to true.

#### Bug fixes

• Fixed a bug where a tokenhighlight question type with inline HTML tags, such as strong or b or em, was rendered as plain text instead of as formatted HTML.

#### Features

• Added new getProcessedOptions public method to the mcq question type. This method enables a user to retrieve information about the processed options that have been rendered into the page. The processed option object contains the information about current options like label, value and the choice_label (e.g. A, B, C... or a, b, c or 1, 2, 3... based on the ui_style.choice_label value). Note that the order of the processed options can be different to the options of the original question's JSON if shuffle_options is set to true.

#### Bug fixes

• Fixed a bug that caused all drag and drop question types' drop zones to be unscrollable on Android devices.
• Fixed an issue with the formulaKeyboard's width, due to some inline styles were wrongly removed.
• Fixed a bug that made all the responses of drag and drop question types hard to drag in Microsoft Edge on touchscreen devices when the questions are wrapped inside an overflow: auto container.
• Fixed a bug that prevents the browser window from scrolling when dragging the responses of some question types like association, imageclozeassociation, sortlist close to browser window's viewport.
• Fixed a bug that caused content rendered inside the scrollablepassage Feature type from being squashed when the main container uses flexbox.
• Fixed a bug with the hotspot Question Type where the validation UI would show during validation even if a question had no validation.
• Fixed a bug that caused an invisible screen reader label to be visible to a normal user.
• Fixed a bug that caused the page to scroll to formulaV2 if the hostpage is using any plugins (like jquery.scroll) to detect the focusing element and scroll to that element. This issue only happened when block_keyboard is being used.
• Mathcore v1.56.0
• Fixed bug with equivSymbolic validation using isSimplified when comparing negative integers to negative fractions.
• Fixed bug with equivSymbolic validation where e^(ln(2x)) was not being treated as equivalent to 2x.
• Fixed bug with equivSymbolic validation where Log(10) was not being treated as equivalent to 1.
• Fixed bug with equivLiteral validation where ignoreOrder was not working within variables, i.e. 2xy and 2yx were not validated as equivalent.

#### Features

• Added beforeValidate event to all Questions which can be validated, so that third party developers can prevent the Question from being validated by clicking the check answer button or through the validate public method.
• Improve accessibility with screen readers for all math Question types by reading out a whole equation.

#### Bug fixes

• Fixed error thrown when processing saves out of sequence

#### Bug fixes

• Fixed a bug in the graphplotting Question Type that disabled the 'snap to grid' option when using scalar values in the canvas.snap_to field.
• Fixed a console error which would be thrown when manually clearing an HTML ancestor of a Learnosity floating elements such as an ImageTool feature.
• Fixed a bug where the imageupload Question Type's "Upload an image" button would remain visible after uploading an image.
• Fixed a bug in fileupload Question Type where files containing the characters "#" or "&" in the filename could not be viewed.
• Fixed a bug where clearing a column of a gridded type question would store the value of that column as an empty string instead of null.
• Fixed bug that prevents user from pasting text with apostrophe into a graphplotting type question's label.
• Fixed a bug where tall math content in a keyboard dropdown would be cut off.
• Fixed a bug in the Match List Question Type where setting shuffle_option to true could render the possible responses in the same order as the correct response.
• Removed unnecessary scrollbar in videoplayer feature when there is still enough space for the videoplayer to display.

#### Bug fixes

• Removed unnecessary scrollbar in videoplayer feature when there is still enough space for the videoplayer to display.

#### Bug fixes

• Fixed a bug in the graphplotting Question Type that disabled the 'snap to grid' option when using scalar values in the canvas.snap_to field.
• Fixed bug where certain math responses with deeply nested brackets could cause an error when resuming the session.

#### Features

• Add a pattern matching option of "contains" for shorttext Question type, which matches as correct any answer containing the specified value. For example, if the correct answer is "Daniel" then answers like "His name is Daniel" or "Daniel is his name" will be marked as correct.
• Add support for entering Math symbols via unicode characters in MathQuill enabled response areas. Where possible, the unicode characters are automatically converted to an equivalent LaTeX symbol.

#### Bug fixes

• Refine shorttext Question type so that when there is no validation data or valid response, the Question is marked as correct during review mode.
• Fix bug affecting match list Questions where explicitly setting the ui_style.validation_stem_numeration option to its default value of "number" caused an exception to be thrown during validation.
• Fix bug affecting match list Questions where providing duplicate response values triggered an exception in resume and review modes.
• Fix bug affecting match list Questions where viewing an unattempted Question with scoring_type: "partialMatch" in review state would trigger an exception.
• Fix bug where user could not scroll to see the entire content of a formulaessay Question in review state.
• Fix bug where the \overarc symbol did not span multiple characters if rendered using MathJax.
• Fix bug where certain math responses with deeply nested brackets could cause an error when resuming the session.
• Fix bug affecting formula keypad where selecting a symbol using arrow keys and space/enter would cause the selected symbol to be entered twice.
• Fix bug affecting formula keypad where custom CSS rules could inadvertently override Learnosity CSS and cause the keypad's buttons to become misaligned.
• Fix accessibility bug affecting formula keypad where pressing tab should have set focus to the symbol groups dropdown selector.
• Fix accessibility bug affecting formula keypad where screen readers did not announce the "minus" button when it was selected.
• Fix bug where the calculator Feature was sometimes not displayed if a page used full screen functionality.
• Fix bug where choicematrix Questions would become misaligned if their content was too long. Long choicematrix Questions now become scrollable.
• Fix accessibility bug which caused a screen reader to focus on the Learnosity hidden iframe.

#### Bug fixes

• Fix bug affecting match list Questions where providing duplicate response values triggered an exception in resume and review modes.
• Fix bug affecting match list Questions where viewing an unattempted Question with scoring_type: "partialMatch" in review state would trigger an exception.

#### Bug fixes

• Fix bug affecting match list Questions where providing duplicate response values triggered an exception in resume and review modes.
• Fix bug affecting match list Questions where viewing an unattempted Question with scoring_type: "partialMatch" in review state would trigger an exception.

#### Bug fixes

• Fix bug affecting match list Questions where providing duplicate response values triggered an exception in resume and review modes.

#### Features

• Support overarc and underarc in formula Questions. Overarc has been added to the geometry symbols group.
• Add closed caption support for uploaded videos in the video player.
• The video player for YouTube and Vimeo content now uses the native UI of those services, which support caption controls.
• Improve rating Question UI by making labels visible in review mode.
• Add conversion for Unicode characters to their LaTeX equivalent if available.

#### Bug fixes

• Fix bug with MathML not being able to initialize properly when existing MathML-generated DOM was already in the page. This was causing a Questions API failure, preventing the Question from rendering.
• Fix bug where various modals were not visible in full screen mode on IE11.
• Fix bug with drag and drop Questions so that they work correctly inside a scaled container.
• Fix bug where unattempted response box of math and chemistry Questions showed an empty box with a dotted outline in review mode.
• Fix bug in longtextv2 where, in full screen, the character map would not appear the first time it was clicked.
• Fix bug in plaintext where the character map modal was not visible in full screen mode.
• Fix bug in graphplotting where a label could be added to the origin coordinates and cause an error when resuming a session.
• Fix bug where the rating Question would not be affected by the disable() and enable() public methods.
• Fix bug with clozetext where the max_length limit would not apply to response areas with a type of "number".
• Fix bug that broke sortlist Questions if the Question JSON used the legacy validation format of validation.valid_response[] (the newer validation format is of the form validation.valid_response.value).

#### Bug fixes

• Fix bug that broke sortlist Questions if the Question JSON used the legacy validation format of validation.valid_response[] (the newer validation format is of the form validation.valid_response.value).

#### Bug fixes

• Fix bug in graphplotting where a label could be added to the origin coordinates and cause an error when resuming a session.

#### Features

• File upload Questions now support additional file types including: TXT, CSV, RTF, XPS, Microsoft Word, Excel, Powerpoint, Publisher and Open Office documents.
• Now upload files to a file upload Question using drag-drop directly from a folder or the desktop.
• Add shuffle_options support to sortlist Questions.
• Math keypad now supports the forward slash / symbol.
• Simple Features without ID's are now automatically assigned a random UUID and their facades are now accessible through LearnosityApp.simpleFeatures() under that UUID.

#### Bug fixes

• Fix bug where orderlist Questions always validated as incorrect if the possible options contained a duplicated Item.
• Fix bug where the submit button (shown with "renderSubmitButton": true) would be disabled after resuming a session, until any of the responses were modified. It is now possible to immediately submit a resumed session.
• Fix bug where calling setScrollablePassagesContextHeight('content') failed with a console error.
• Fix audio bug where audio recording Questions didn't work in Safari on iOS 11.
• Fix audio bug where using Item events to automatically trigger an audio player did not work on iOS and Android.
• Fix bug in shorttext Questions where the user could still type alphabetic characters when the input type was restricted to numbers.
• Fix clozetext bugs where the spellcheck and max_length options didn't work.
• Fix clozetext bug where disable() didn't work if the multiple_line option was enabled.
• Fix choicematrix bug where any HTML in the stem column title (stem_title) or option row title (option_row_title) would be displayed as raw code instead of formatted rich content.
• Fix bug where viewing rating Questions in review mode would appear to display an empty/unattempted response if a color (tint) had not been defined for the selected rating. A default color is now used to ensure the selected rating is always visible.
• Fix imageclozeassociation bug where dropzone containers were slightly misaligned with the dropzone target icon.
• Fix bug where draggable Items wouldn't display a ghost image when located inside an element with a CSS transform applied.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Improve logging on timeouts

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Number labels on number line Questions are now correctly centered to their ticks even if the Question is originally rendered hidden.
• Remove extra padding being added to match list Questions when in review or when checking answers.
• Choicematrix inputs are now disabled when covered via response masking.
• Fix an issue with Cloze Text where custom characters weren't being made available as special characters.
• Fix an issue with Cloze Text where special characters wouldn't be inserted.
• Fix an issue with Cloze Text where the special characters keypad wouldn't present on Safari or IE11.
• Fix bug that caused responses' block elements to break the layout of clozeassociation Questions.
• Fix bug where extra characters were added to formula Questions' input area on paste.
• Fix rendering of custom special characters causing them to be displayed as their HTML entities.

#### Bug fixes

• Fix a possible timeout on a save() or submit() request.

#### Bug fixes

• Fix an issue with Image Cloze Association question types where the response areas were being misaligned if they had been configured to not show a pointer.
• Fix bug that stopped Audio question type from persisting its response's metadata

#### Bug fixes

• Prevent Failed Authentication errors when multiple instances of Questions API have been loaded on the same page.

#### Features

• Improve memory footprint of shorttext and Long Text V2 question types that have recently been re-written to be more stable and performant.

#### Bug fixes

• Prevent the math keyboard from moving to the top of the response when ui_style.keyboard_below_response_area is set to true in clozeformula and clozechemistry.
• Fix an issue with Long Text V2 where interacting with toolbar buttons and modals that use WYSIHTML would not apply formatting and would occasionally cause the cursor to move to the beginning of the response area.
• Fix an issue where Image Cloze Association question types would not scale up or down on window resize.
• Fix vertical alignment of response containers for Image Cloze Association Drag & Drop questions so that the arrow always lines up with the pointer, regardless of the size of the response.
• Fix a bug where the formula keypad would insert a random character when opened using a touch device.
• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Prevent the math keyboard from moving to the top of the response when ui_style.keyboard_below_response_area is set to true in clozeformula and clozechemistry.
• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Bug fixes

• Fix an issue that was introduced with Chrome 61, which would cause occasional issues with formula question types and math editing performance. This includes excess browser memory usage, which could, in extreme cases, cause some browsers to crash.

#### Features

• Updated default font sizes, accessibility font size choices, and font rendering.
• Questions with a left-aligned stimulus now render responsively when they are initially rendered inside a hidden element.
• Add shuffle options support for cloze dropdown, cloze association, image cloze association and image cloze dropdown questions.
• Remove unnecessary drag bar for block and block on focus keypad types.
• The new formula keypad now shows the label (usually a LaTeX symbol) representing each custom symbol group.

#### Bug fixes

• Fix bug where the drop zones for image cloze association questions could be rendered incorrectly if the image was loaded from the browser cache.
• Fix bug on Android devices where formula question input wasn't possible via the native keyboard.
• Image upload questions will no longer save responses before upload completes, and now warns users if upload fails.
• Fix validation bug where fillshape questions would display as correct if the question's max score was zero and the question was left unattempted.
• Fix bug where a race condition during initialization could cause a fatal error on Chrome OS.
• Fix bug where calling reset() on one questions app instance could cause audio questions in other instances to stop working.
• Any open calculator or imagetool Features will now be closed when reset() is called on the app instance or the global LearnosityApp object.
• Fix bug in choicematrix questions where answer masking could not be removed once it had been applied to a response option.
• Fix bug where resuming an association question with shuffled response options would render its responses in incorrect positions.

#### Features

• The new formula keypad now shows the label (usually a LaTeX symbol) representing each custom symbol group.

#### Bug fixes

• Fix bug where resuming an association question with shuffled response options would render its responses in incorrect positions.

#### Features

• Add shuffle options support for match list (association) Questions.
• Add support for an instructor stimulus on passages to provide teachers with instructional or contextual information.
• Imagetool Features are now initially positioned in the middle of the viewport. They can also be repositioned by calling the position() public method.
• Add server side scoring support for custom question type.

#### Bug fixes

• Prevent framework/modal styles from conflicting with the positions of response containers in image cloze Questions.
• Fix sortlist arrow buttons not working in browsers that support pointer events.
• Fix validation of math Questions where conflicting configurations in alternate valid responses caused errors.
• When using "button" type audio recorders and audio players, the popup now displays above the buttons if there is limited space below them. The arrow on the popups are now aligned with the icon on their respective buttons.
• Fix bug where calling getScore() for a hotspot Question could sometimes return an incorrect score if the user had modified their response.

#### Bug fixes

• When using "button" type audio recorders and audio players, the popup now displays above the buttons if there is limited space below them. The arrow on the popups are now aligned with the icon on their respective buttons.

#### Bug fixes

• Gridded question type can now validate against authored questions with extraneous zeroes and spaces.
• Fix bug where a graphing question inside a scrollable passage would not work in Microsoft Edge.
• Fix bug where the cursor position was read incorrectly for graphplotting or numberline questions when placed inside certain scrollable containers.
• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix bug where a graphing question inside a scrollable passage would not work in Microsoft Edge.
• Fix bug where the cursor position was read incorrectly for graphplotting or numberline questions when placed inside certain scrollable containers.
• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix bug where a graphing question inside a scrollable passage would not work in Microsoft Edge.
• Fix bug where the cursor position was read incorrectly for graphplotting or numberline questions when placed inside certain scrollable containers.
• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Bug fixes

• Fix rare issue where saves could be processed out of sequence during periods of extreme latency.

#### Features

• Add shuffle options support for choice matrix Questions.
• Add a pagination option to shared passages that allows shared passages to be broken up into smaller sections that can be clicked or tapped through.
• Calculator features now have a close button, instead of closing automatically when they lose focus. The escape key can also be used to clear and close the calculator.
• Improved UI for the math keypad - the group slider has been replaced with a dropdown, for better paging between keypad layouts. Also refined the hover and active states of the keypad to improve UX and accessibility for authors and students.
• We now append an index to the HTML id assigned to sharedpassage feature elements. This fixes issues where the id attribute would be duplicated if the same sharedpassage appeared multiple times on a page. Other features are not affected.

#### Bug fixes

• When using choicematrix with partialMatch scoring, the validation UI will no longer show a validation border. The border would display as incorrect even if partial points had been awarded, which was misleading.
• Add mouse support for highlight Questions on hybrid touch/mouse devices such as Surface tablets
• Prevent zoom behaviour when double-tapping the toolbar of imagehighlight Questions (e.g. when repeatedly tapping the undo button).
• Fix bug that causes window.parent to be changed when the user interacts with graphplotting Questions. This could cause problems if the host page JavaScript uses window.parent.
• Fix bug where the x-axis label was not center-aligned in simplechart Questions.
• Fix a bug in the scoring of graphplotting which was causing some answers to be marked as incorrect depending on the order of the points in the response object.
• When ignore_repeated_shapes is set in a graphplotting question, also ignore shapes in a response which cannot be seen because they have been collapsed into a single point which is contained in another shape.
• Fix bug where answer masking did not work on touch devices.
• Fix bug where drag-drop options could disappear on touch devices when multiple responses were selected by tapping a possible response and a valid response area very quickly.

#### Bug fixes

• Fix bug where drag-drop options could disappear on touch devices when multiple responses were selected by tapping a possible response and a valid response area very quickly.

#### Bug fixes

• Fix a bug in the scoring of graphplotting which was causing some answers to be marked as incorrect depending on the order of the points in the response object.
• When ignore_repeated_shapes is set in a graphplotting question, also ignore shapes in a response which cannot be seen because they have been collapsed into a single point which is contained in another shape.

#### Bug fixes

• Fix bug that causes window.parent to be changed when the user interacts with the graphplotting question type. This bug could cause problems if the host page javascript uses window.parent.

#### Bug fixes

• Fix bug that causes window.parent to be changed when the user interacts with the graphplotting question type. This bug could cause problems if the host page javascript uses window.parent.

#### Bug fixes

• Fix bug where text responses would sometimes be incomplete when rendered in resume or review.

#### Features

• Automatically retry failed uploads in file upload and image annotation upload question types before triggering an error.

#### Bug fixes

• Fix an issue with the character map button in Safari, that would cause the character palette to disappear immediately after clicking the button.
• Fix an issue with question types that use JSX Graph whereby mouse interactions would no longer work after interacting with touch.
• Fix issue where short text will display the correct answer area in review mode even when the validatable value is empty.
• Fix an issue where a LaTeX response of _{_{ }{}} will cause the LaTeX to not render in resume or review modes.
• Make the file upload question type IE11 compatible.
• Fix bug that caused Questions API to throw exception when being loaded inside an invalid DOCTYPE page in IE11.

#### Bug fixes

• Fix bug where text responses would sometimes be incomplete when rendered in resume or review.

#### Polish

• Improve the performance of all question types which use drag and drop functionality.
• Update file upload error messages to be displayed only once instead of multiple times when multiple files have failed to upload.

#### Bug fixes

• Fix manipulating of elements on the board in numberline and graphplotting question types, when the question is placed in scrollable containers.
• Fix issue where dragging was not working in numberline drag and drop on Surface tablets.
• Fix issue where the x and y axis zero label in graphplotting question types was misaligned when the graph dimensions were rectangular.
• Fix calculator and formula keypad features for touch devices so they are only draggable by the top handle instead of the entire keypad area.
• Fix an issue where Choice Matrix unattempted responses would be displayed with 'correct' validation.
• Fix bug where custom heights were not applied to image cloze formula responses.
• Fix bug where inte interacting with chart question types on touch devices would cause the page to scroll.
• Scientific calculator will now calculate combinations (nCr) and permutations (nPr) correctly.
• Fix a display issue with audio players where the sound level would be shown as 100% on initial playback.
• Fix an issue whereby image highlight questions would not display student brush strokes in review mode if no background image was added to the question.
• Fix scrolling in scrollable passages on Chromebook and Surface devices.
• Fix a bug that causes validation UI to stay on the screen after the user interacts with the question. This bug only happens when validate({ showCorrectAnswers: true}) is called. (For example, this would happen in the Question Editor preview pane.)

#### Features

• Add disable() and enable() public methods to all feature types.
• Add HTML5 doctype detection, to warn client developers if the doctype has not been correctly added to a page.
• Update the classification question type to support a new scoring option Partial match per element - max score.

#### Polish

• Change the keyboard focus style to a white rectangle on darker buttons, to improve visibility and accessibility.
• Update word count text in label bundles for longtext and longtextV2 to display as "Word(s)".

#### Bug fixes

• Fix a bug that caused videoplayer feature to expose Questions API's jQuery as a window object.
• Fix a bug where the formula keypad converted all alphabetic symbols to uppercase after the first click on any uppercase letter symbol. "Caps lock" behaviour is now restricted to the qwerty keypad group.
• Fix a bug where the imageupload question type in review mode would not restart the replay correctly when the Replay button was clicked multiple times.
• Fix a bug where resuming an imagehighlight question would not allow clearing an existing response when the question type was initially loaded.
• Fix an issue in the Rich Text v2 question type, so that an empty formatting_options list will now hide the toolbar.

#### Features

• Add beta support for the new file upload question type, which allows students to upload any file for manual scoring.
• equivSyntax math scoring now supports an ignore text option, for ignoring any LaTeX text during validation.

#### Polish

• Improve UI color contrast and accesssibility for image upload questions.

#### Bug fixes

• As a fail-safe for imageupload, offer ability to upload a new image when a student resumes with an image source that cannot be loaded.
• Fix a bug that allows simpleshading's read-only cell to be editable when validation object is not defined.
• Fix a bug where a simple feature span added to an existing question wouldn't get rendered on subsequent calls to LearnosityApp.init().
• Fix an issue where a hotspot question with an empty array for valid_response.value was throwing an error during render in review state.
• Fix a bug which would prevent the division (obelus) symbol from appearing in a custom layout for the formula keyboard.
• Fix an issue where MathQuill rendering could create invalid HTML when < or > were part of the valid response.
• Prevent polygons from being dragged outside of the grid in graphplotting questions.

#### Bug fixes

• As a fail-safe for imageupload, offer ability to upload a new image when a student resumes with an image source that cannot be loaded.

#### Bug fixes

• Fix bug where dragging certain elements in a graphplotting question could cause the response data to be recorded incorrectly.

#### Features

• Support parentheses multiplication method in scientific calculator.
• When using the MR function on the scientific calculator, it will now restore the stored number and append it to current calculator value. This allows students to use other functions such as a square root, sin, cos, tan etc. with the recalled value.
• When using the Questions API save() or submit() public methods, any Save or Submit buttons on the page will now be updated to show their current states. For example, calling the save() method will show "Saving..." and "Saved" on any Save buttons.
• Scrollable passages are now supported on hybrid devices. A scrollable passage can be scrolled by swiping the touchscreen, dragging with the thumb, or using two-finger swiping on the trackpad. Note that swiping the touchscreen does not work in Microsoft Edge due to browser limitations.

#### Polish

• Add all lowercase and uppercase letters to the formula keypad so the user has the ability to use the whole alphabet in formulas.

#### Bug fixes

• Fix bug in scientific calculator where the MR function would restore the saved number as a rounded down integer.
• Fix bug where dragging certain elements in a graphplotting question could cause the response data to be recorded incorrectly.
• Fix bug in shorttext where using apostrophes in a correct response would cause the question to always be scored as incorrect.
• Fix an issue where Vimeo video features would not respond to public methods such as play() and stop().

#### Bug fixes

• Fix a bug causing tags and attributes to be wrongly escaped, which was especially affecting IE11 and Edge, where content wasn't rendered properly.
• Scrollable passages are now supported on hybrid devices. A scrollable passage can be scrolled by swiping the touchscreen, dragging with the thumb, or using two-finger swiping on the trackpad. Note that swiping the touchscreen does not work in Microsoft Edge due to browser limitations.

#### Bug fixes

• Fix a bug causing tags and attributes to be wrongly escaped, which was especially affecting IE11 and Edge, where content wasn't rendered properly.
• Scrollable passages are now supported on hybrid devices. A scrollable passage can be scrolled by swiping the touchscreen, dragging with the thumb, or using two-finger swiping on the trackpad. Note that swiping the touchscreen does not work in Microsoft Edge due to browser limitations.

#### Bug fixes

• Fix a bug causing tags and attributes to be wrongly escaped, which was especially affecting IE11 and Edge, where content wasn't rendered properly.

#### Bug fixes

• Reduce the maximum nesting depth to 40 levels for math content in formula/chemistry questions. For instance, this will prevent students from entering over 40 nested parenthesis which causes a LaTeX rendering error.

#### Features

• Scrollable passages are now supported on hybrid devices. A scrollable passage can be scrolled by swiping the touchscreen, dragging with the thumb, or using two-finger swiping on the trackpad. Note that swiping the touchscreen does not work in Microsoft Edge due to browser limitations.

#### Bug fixes

• Minor fix for the positioning of axis labels in graphplotting when HTML is used in the label.

#### Features

• Add new validation.unscored flag for all questions, to nullify any other configured scoring rules and force score and max_score to 0.
• Add a toggle() method to the Calculator and Imagetool features toggle their visibility on/off.

#### Polish

• Rename simple feature's simplefeature-id attribute to simplefeature_id to keep it consistent with other attributes.

#### Bug fixes

• Image highlight questions: fix bug where color selector does not display on iPad.
• Increase the internal precision of the calculator feature to improve certain rare rounding errors.
• Fix bug where graphing questions that included polygons did not validate correctly when previewed in the legacy version of Author Site.

#### Bug fixes

• Fix an issue where drag and drop based question types would fail to work if they were in a scrollable passage that happened to change size after an initial render.

#### Bug fixes

• Fix an issue where drag and drop based question types would fail to work if they were in a scrollable passage that happened to change size after an initial render.

#### Features

• Add support for custom features so that features can be created from scratch much like custom question types.
• Add simpleFeature() and simpleFeatures() public methods to the global LearnosityApp object and to each question object, so that simple features can be hooked into via a public interface, much like regular features and questions.
• Introduce for Rich Text Essay Version 2 (DRAFT), which supports new formatting features including blockquote, table modification, text indent control, text alignment, and more.

#### Bug fixes

• Make the API more hardy against errors that would occur when using as a Chrome App, by accounting for the possibility that chrome.runtime.getManifest might not exist within a particular browser environment.
• Fix bug which caused the JAWS screen reader to ignore SpokenMath generated aria-labels.
• Fix an issue where answers do not show up for short text question types when in local_practice. Correct answers were not being displayed unless you had first attempted to answer the question, but now the correct answer will be displayed regardless - same as it would be with an unattempted multiple choice question, for example.
• Fix an issue with hotspot question types where the correct answers weren't clear to users of screen readers, and responses that were missed by a user when they should actually have been selected were being labelled with 'no response given - correct'. This was vague as it could also imply that a response should have correctly been left unattempted. Correct answers are now clear to users of screen readers and correct responses that were missed are labelled 'no response given - missed' - for the sake of clarity.
• Fix an issue where dragging the scrollbar in a scrollable passage would highlight the contents of the passage. We've fixed this by preventing the default browser behaviour that would cause this.
• Fix an issue where answers do not show up for short text question types when in local_practice. Correct answers were not being displayed unless you had first attempted to answer the question, but now the correct answer will be displayed regardless - same as it would be with an unattempted multiple choice question, for example.

#### Bug fixes

• Fix an issue where answers do not show up for short text question types when in local_practice. Correct answers were not being displayed unless you had first attempted to answer the question, but now the correct answer will be displayed regardless - same as it would be with an unattempted multiple choice question, for example.

#### Bug fixes

• Fix bug where pausing an audio recording while recording would cause the save progress to stall when the test was already saved.

#### Features

• Add a response container to the formula keyboard for authors.
• Add new volume get/set public methods for audio question types and features.
• Add support for enabling/disabling browser spellcheck in formulaessay.
• Introduce "Minimum score if attempted" (min_score_if_attempted) property to support, e.g., participation points.
• All question types can now return a score, including those that are not autoscorable (to support participation scoring).
• Add support for alt text and aria label attributes to hotspot questions.
• Update hotspot to make the response areas keyboard accessible.

#### Bug fixes

• Add larger resize target areas for charts.
• Improve clarity of MathQuill content rendered with a small font size.
• Fix escaping issue where less than or greater than symbols inside MathQuill content would be rendered as "<"
• Fix a formula scoring bug where isSimplified worked incorrectly when the response contained sqrt{n} * sqrt{m}.
• Add toolbar role to the formula keyboard to improve accessibility.
• Fix Undo/Redo feature not working properly in imagehighlight.
• Fix hotspot bug where aria labels for correct answer could be out of sync with UI.
• Fix hotspot color accessibility issue when validating answers.
• Fix hotspot bug where resuming a session would not restore the highlighting to the selected hotspot area.
• Fix bug where tokenhighlight would not reveal the correct answers.
• Fix bug where charactermap button would still show as active after closing the charactermap dropdown.
• Fix support for drag/drop interactions on Surface devices.
• Fix support for scrollablepassage on Surface devices.
• Fix image highlight drawing issues on Surface and iPad devices.
• Fix dragdrop functionality to handle scrollsize changes after starting to drag an Item.
• Fix compatibility of SVG accessibility elements in IE11 for hotspot.
• Fix bug where imageupload did not render on IE11.
• Fix bug where viewing the charactermap in a longtext question would cause flickering in IE.

#### Bug fixes

• Fix bug where viewing the charactermap in a longtext question would cause flickering in IE.

#### Features

• Add vertical_top attribute support for all image cloze question types to ensure all the draggable response always stay at the correct position regarding the fontsize or container's size.
• Simplechart question type's toolbar now can be set to hidden if attribute add_points is disabled.

#### Polish

• Improve accessibility by preventing screen reader from reading out Learnosity's icons.

#### Bug fixes

• Prevent Questions API's styling from being overridden by third party CSS like Bootstrap.
• Prevent volume slider from being rendered outside of audio question type's toolbar.
• Prevent MathJax rendering events from being called multiple times.
• Prevent throwing math errors coming from student's responses in cloze question types.
• Prevent throwing exception when we check answer of unattempted formula questions.

#### Bug fixes

• Prevent volume slider from being rendered outside of audio question type's toolbar.
• Prevent throwing exception when we check answer of unattempted formula questions.

#### Polish

• Formula floating keyboard now will appear above the formula input if they input stays too close to the bottom edge of the screen

#### Bug fixes

• Prevent throwing math errors coming from student's responses in cloze question types

#### Features

• Add image alternative text to imageupload question type
• Add dragula to orderlist question type

#### Polish

• Formula floating keyboard now will appear above the formula input if they input stays too close to the bottom edge of the screen

#### Bug fixes

• Fix bug where simple audio would stop playing when users go to another question
• Fix bug where audio volume slider is invisible
• Fix bug where points delete on iPad
• Fix bug where response_id too long error
• Fix bug where consecutive WebRTC audio questions with pre-recording cue could report incorrect silence
• Fix bug where imageupload review mode is not working
• Fix bug where scores of 1 will no longer be given when authors set an answer to have 0 score

#### Bug fixes

• Fix validation when an element in valid response was using different points than the element in a provided response
• When remove tool was chosen in numberlineplot question type, you could move elements around, which prevents removing, which is especially visible on iPads

#### Bug fixes

• Fix bug where the audio volume slider becomes hidden

#### Bug fixes

• Fix bug where WebRTC recorder would not finish uploading recordings when the recording length was 0

#### Features

• Audio questions now prefer WebRTC over Flash for recording when available
• Audio questions using WebRTC for recording now display a dynamically generated waveform when playing back a recording

#### Bug fixes

• Fix bug where very old legacy content failed to render using the orderlist question type
• Fix bug where calling stop public method on an audioplayer feature had no effect when its counter is active
• Fix bug where calling stop public method on an audio question had no effect when its counter is active
• Improved resilience of WebRTC recording around handling multiple simultaneous stop events and saving audio response data
• Improved WebRTC recording silence detection threshold
• Improved resilience of WebRTC recorder when stopping a recording during initial pre-recording cue
• Improved resilience of audio recorders used in conjunction with Assess API activity workflow
• Improved resilience of audioplayer feature used in conjunction with Assess API activity workflow

#### Features

• Add shuffle option for Orderlist question type
• Add retryUpload() to WebRTC audio question type to re-attempt audio upload if audio upload fails

#### Bug fixes

• Fix ScrollablePassage so that the passage will scroll when dragging an element outside the bounds of the passage
• Fix mapValidationMetadata() public method for Classification question type to return the correct validation state
• Add support for arrays/objects in custom labelBundle
• Fix rare bug where Graphplotting questions could save a response that did not match the user's input
• Fix Mathquill Cannot read property 'jQ' of undefined error on blur event
• Fix bug affecting Association question type where specifying a possible_response_group with no title property would prevent the question's container from being draggable

#### Bug fixes

• Improvements to Google Analytics tracking data.

#### Bug fixes

• Fix saving graphplotting response, so actions and composition are always aligned

#### Bug fixes

• Fix saving graphplotting response, so actions and composition are always aligned

#### Bug fixes

• We fixed a rare math rendering bug (by updating the internal version of MathJax to v2.7.0).

#### Bug fixes

• We fixed a rare math rendering bug (by updating the internal version of MathJax to v2.7.0).

#### Features

• We've made Image Cloze Association and Image Cloze Dropdown question types accessible.
• We've added WebRTC resilience through network instability to handle situations such as the network going down when a user is in the middle of recording.

#### Bug fixes

• We've fixed an issue in Cloze Math Formula question types where using the tab key wouldn't take the user to the next response input.
• We've fixed a bug where content would be cut off inside a scrollable passage when an Association response is dragged back into its original container.
• We've fixed an issue with Numberline Plot question types where overlapping points and tickets would make the questions unreadable.
• We now make sure errorListener user-provided callback is called at the end of the call stack when initializing the API.
• For Simplechart, specifically when using the line type chart, we've fixed an issue where the validation marks would be misaligned across responses when using disabled points. We've also fixed a problem with questions not validating correctly due to a floating-point error.
• Mathcore v1.43.0
• We've fixed bug where large powers of decimal expressions would evaluate to zero.
• We've fixed equivValue not respecting powers of units in some contexts.
• We've fixed the scoring of logarithms
• We've fixed inconsistent equivSymbolic validation with absolute values
• We've fixed the 'calculate' method not being able to solve some simple equations, e.g. x=\sqrt{4}.

#### Features

• We've updated internal analytics to improve tracking with Google Tag Manager.

#### Features

• We've updated internal analytics to improve tracking with Google Tag Manager.

#### Features

• We've updated internal analytics to improve tracking with Google Tag Manager.

#### Features

• We've updated internal analytics to improve tracking with Google Tag Manager.

#### Features

• The audio player feature will now prioritise HTML5 audio playback over Flash playback.
• We've updated internal analytics to improve tracking with Google Tag Manager.

#### Features

• We've updated internal analytics to improve tracking with Google Tag Manager.

#### Features

• We've updated internal analytics to improve tracking with Google Tag Manager.

#### Features

• The audio player feature will now prioritise HTML5 audio playback over Flash playback.
• We've updated internal analytics to improve tracking with Google Tag Manager.

#### Bug fixes

• Improved resilience of WebRTC audio question when uploading audio chunks in the background throughout network instability

#### Bug fixes

• Fixed bug that causes drag and drop question types' content inside scrollable passage to be cut off.

#### Bug fixes

• Fixed bug that cause content with MathML in Match List and Image Cloze Association question types to be validated wrongly.

#### Bug fixes

• We've fixed an issue with MathJax rendering that was breaking math authoring in Question Editor.

#### Features

• We've improved the way screen readers read math formulas when rendering with MathJax.
• We've updated the colour order on histogram question types so that similar colours aren't side-by-side and there is more contrast between bars. These bars now also have hover states.
• We now allow grouping of responses for classification, association, and cloze assocation question types.
• We now allow usage of '/' for fractions in gridded question types.
• We've updated internal analytics to improve tracking with Google Tag Manager.
• We've prioritised HTML5 over Flash for audio playback.

#### Bug fixes

• For math essay question types, we now allow the keyboard to collapse after interacting with a match list question type.
• For association question types, we now prevent draggable elements from scrolling the viewport horizontally when moved to an edge. Horizontal scrolling will now only occur if there is actually content to the left or right of the viewport.
• We now prevent duplicated 10019 error codes from being thrown.
• With charting questions, we no longer have locked/inactive bars appear as unattempted responses in review mode.
• Simple shading tiles now retain their borders when highlighted.
• We've fixed the allow_negative_scores initialization option so that the flag persists on each question per response. We've also fixed an issue where the flag would attempt to attach to a question with no validation - causing an error.
• We've fixed an issue that was causing the failed submission dialog to never appear when using the addItem public method.
• We now prevent draggable elements on iOS 10 from scrolling the page when they aren't meant to.

#### Bug fixes

• For math essay question types, we now allow the keyboard to collapse after interacting with a match list question type.

#### Bug fixes

• Mathcore v1.40.4 Fixed bug related to equivSymbolic inconsistencies with negative numbers in inequalities.

#### Bug fixes

• Suppressed throwing math errors if they come from the student response's.

#### Bug fixes

• Set maximum max width for clozetext question type to prevent unusually large width if max_length attribute is set to a very high number.
• For drag and drop question types that are nested inside a scrollable passage feature, we now update the scroll bar position when switching focus to a new draggable element.
• For drag and drop question types on touch devices, we now prevent a scrollable passage's scroll bar from becoming out of sync with a draggable element's position when dragging the element outside its container's viewport.

#### Bug fixes

• For drag and drop question types that are nested inside a scrollable passage feature, we now update the scroll bar position when switching focus to a new draggable element.
• For drag and drop question types on touch devices, we now prevent a scrollable passage's scroll bar from becoming out of sync with a draggable element's position when dragging the element outside its container's viewport.

#### Bug fixes

• Fix YouTube playback on video features
• Fix position of fullscreen button on video features

#### Bug fixes

• Fix YouTube playback on video features
• Fix position of fullscreen button on video features

#### Bug fixes

• Fix YouTube playback on video features
• Fix position of fullscreen button on video features

#### Bug fixes

• Fix YouTube playback on video features
• Fix position of fullscreen button on video features

#### Bug fixes

• Audio question appropriately logs issues with loading an audio buffer from memory for playback.

#### Bug fixes

• Audio question appropriately logs issues with loading an audio buffer from memory for playback.

#### Features

• New SpokenMath screen reader support - renders aria labels for math content in all question types.
• WebRTC audio questions now inform the user if they deny browser permission to use their microphone, or if the host page is loaded over insecure HTTP (in Chrome) .
• WebRTC audio question type now supported in Microsoft Edge.
• Add full keyboard support for Simpleshading question type. Arrow keys move the focus and TAB skips to the next focusable Item.
• Add partial credit support: partial match per response and partial match for MCQ question type.
• New allow_negative_scores validation flag for all question types.

#### Polish

• FillShape question type byValue scoring method now will count the value of each shape regardless where they are placed.

#### Bug fixes

• Fix bug where the flashless audio player could fail to load an audio resource even if it existed, due to a cache-busting timestamp that was appended to the url.
• Fix bug where the WebRTC audio question would continue recording or playback after reset() was called.
• Fix bug where the validation UI for imageupload questions would show the correct answers with the wrong position label.
• Fix misaligned rendering of points in numberline question type.
• Fix bug where editing a clozetext response input would append duplicate content to its aria label, causing screen reader tools to repeat themselves.
• Fix bug where the upload modal for imageupload questions could be rendered outside the question's containing div.
• Fix font size and padding issue on calculator result field.
• X axis label of Simplechart question type now will always be centered.
• Fix bug where an imagetool feature could not be rotated on hybrid devices.
• Fix bug where gridded questions would render with very wide response boxes in Firefox.
• Fix bug where simplechart questions could be rendered with very narrow columns if they had been set to display:none.

#### Bug fixes

• Mathcore v1.40.3: Revert a recent change to isSimplified so expanded formulas are considered simplified again (instead of factorized forms being considered simplified).

#### Bug fixes

• Fixed bug in WebRTC audio where having no microphone access or permissions and still attempting to record would block a save.
• Fixed Edge support for WebRTC audio question.
• Calling reset on WebRTC audio question will stop recording/playback properly.
• WebRTC audio differentiates between microphone authentication being cancelled and trying to access the microphone over HTTP in Chrome.
• Fixed 'trying to retrieve audio' issues for some audio resources for flashless audio player when they're actually available.

#### Bug fixes

• X axis label of Simplechart question type now will always be centered.

#### Bug fixes

• Fixed a performance bug in cloze text inputs. We removed some unnecessaryaria label and DOM manipulations.

#### Features

• Add width/height support to image highlight questions.
• Introduce unattempted state for simple chart questions.

#### Polish

• Remove the stimulus from MCQ question type's Arial-label attribute

#### Bug fixes

• Prevent image cloze association right pointer to be cover when applying fixed width and height.
• Audio question type will not wait for uploader status if there is no microphone available.
• Stop graphplotting from throwing exception when processing empty responses.
• Fix cloze dropdown validation where a single empty response was the valid response, but would validate as incorrect.
• Fix simple chart from rendering wrongly in display: none state.
• Fix bug in simple chart review mode where unattempted columns were displayed as incorrect responses, instead of unattempted responses.
• When using tab key to navigate a multi-answer MCQ question type in the check answers state, NVDA now reads the text of all the responses and their review state instead of "blank".
• Fix bug where resetting or initializing Question API in resume mode after detecting duplicate response would throw an exception.
• Prevent math keyboard from jumping in Formulaessay question type.
• Prevent browser from freezing when using tab key to navigate an image highlight question.

#### Bug fixes

• Fix bug in flash recorder when reseting and initialising an activity with an audio question in it.

#### Bug fixes

• Prevent Formula Essay math keyboard from jumping when pressing symbol group buttons.

#### Bug fixes

• Fix a minimum width discrepancy with the bar between stimulus and response with Association and Matchlist.
• Prevent drag and drop style questions from making the screen jump back down to the possible responses container when not using keyboard navigation/interaction.

#### Features

• Add an extended mode to the basic calculator feature that includes buttons for calculating square root, percentage, and CE.
• Improve performance of the formula keyboard.
• Add three new symbols (limit, partial derivative and sum) to the symbol list for math questions.

#### Bug fixes

• Prevent switching of chart types with decimal valued bars from crashing browser.
• Prevent drag and drop style questions from making the screen jump back down to the possible responses container when not using keyboard navigation/interaction.
• Fix a minimum width discrepancy with the bar between stimulus and response with Association and Matchlist.
• Fix an issue where math expressions can't be edited using the Latex editor.
• Fix an issue where interacting with a simple Audio feature when authoring would affect the item.
• Fix limited playback not working on the Audio player.
• Fix an issue with rendering dimensions with Image Association, where the container size would be much larger than the stimulus image.

#### Bug fixes

• Fix an issue where latex would not render if the unicode symbol for NULL (\u0000) is inputted.

#### Bug fixes

• Fix incompatiblity in mathcore library v1.38.1

#### Features

• Add public method “checkValidation” to check an authored question has a Validation value set.
• Update colour palette ensuring 3:1 contrast ratio now meeting AA accessibility rating for following Question types: simple shading, simple chart, histogram, number line plot, number line association.
• Add Accessibility support to Check Answer and Review state across all question types. Screen readers will now announce the overall correct/incorrect state of the question along with the results for each specific part of the question where applicable

#### Polish

• Update products main blue colour to 3:1 contrast ratio to meet AA accessibility rating.
• Improve consistency of empty cloze response areas in Review state for Formula questions.
• Made consistent Clozeformula validation UI for unattempted responses, where previously they displayed as incorrect state.

#### Bug fixes

• Prevent Simple Chart validation wrapper from displaying when no response is made.
• Changed 2nd function triganometry key displays from ‘a’ to superscript -1 for the Scientific calculator.
• Fix ‘Root’ key rendering issue on Windows for the Scientific calculator.
• Fix undefined activity error with showInstructorStimulus.
• Prevent imageclozeassociation predefined response width from being overriden by css min-width.
• Fix "width scaling" and "decimal point option" in Gridded question type.
• Fix the display of html entities in Close Dropdown questions.
• Disallow entering unicode "NUL" characters into formula entry field of Formula questions.

#### Bug fixes

• Prevent imageclozeassociation predefined response width from being overriden by css min-width.

#### Bug fixes

• Backpatch scoring lib to resolve scoring timeout not working with big powers with equivSymbolic validation.

#### Bug fixes

• Fix issue where muting the audio before play in HTML5 playback would not work
• Fix undefined activity error associated with showInstructorStimulus

#### Features

• Add fillshape (beta) question type.
• Add gridded (beta) question type.
• Add support for "expires" security parameter.

#### Polish

• Cache mathquill-rendered keyboard buttons to improve the performance.
• Improve render process for all question type during display:none state.
• Update well (feature box) border for higher contrast.

#### Bug fixes

• Fix misaligned response position of imagecloze question type.
• Fix rendering of some symbols in certain sizes in IE9 and IE11 by MathQuill Symbola font.
• Prevent the app from crashing when rendering bad latex.
• Render HTML and MathML content correctly during review state of inline sortlist question type.
• Fix WebRTC playback continuing to resubscribe to audioLoadComplete events.

#### Bug fixes

• Fixed misaligned response position of imagecloze question type.
• Prevent the app from being crashed when rendering bad latex.

#### Bug fixes

• Fixed misaligned response position of imagecloze question type.

#### Bug fixes

• Fixed misaligned response position of imagecloze question type.

#### Bug fixes

• Fixed misaligned response position of imagecloze question type.

#### Bug fixes

• Fixed misaligned response position of imagecloze question type.

#### Bug fixes

• Fixed misaligned response position of imagecloze question type.

#### Bug fixes

• Fixed failure of MathJax rendered elements in draggable question types.

#### Bug fixes

• Fixed failure of MathJax rendered elements in draggable question types.

#### Features

• Add ARIA and keyboard support for calculator.
• Debounce save and submit calls so that they don't form queues.

#### Bug fixes

• Make check answer button accessible.
• Fix a display issue in Numberline where the correct answer drag tiles would to the right in review mode.
• Fix a duplication issue with Mathjax when using own Mathjax library.
• Fix check answer button horizontal alignment inconsistency.
• Fix mapValidationMetadata not respecting shuffled response orders in the index referenced in the data for MCQ.
• Fix Hotspot stimulus image distortion.
• Fix Hotspot not rendering correctly when in display:none; container.
• Fix exception when checking answer if validation.scoring_type has not been set with Classification questions.
• Mathcore v1.39.0:
• Fix ignoreCoefficientOne interprets (1) as 1
• Fix Ignore Order with more than two factors
• Fix isSimplified should return false for all repeating decimal
• Fix isSimplified doesn't recognize decimal multiplication
• Fix isSimplified doesn't recognize %
• Fix isSimplified not working properly with equivSymbolic
• Fix equivLiteral - handling 2x vs 2\times x

#### Polish

• Fix MathJax duplication issue when rendering cloned DOM element for the second time

#### Bug fixes

• Fixed formula scoring issue

#### Bug fixes

• Fix issue with MCQ multi-select still allowing the response to be modified after using the disable public method.
• Fix drag and drop incosistencies across various questions that have draggable components.
• Prevent Shading questions from wrapping on smaller screens.
• Fix incorrect width being applied to possible responses with Cloze questions.
• Fix "check answers" mode not being cleared upon further interaction with Hotspot questions.
• Fix stimulus images not keeping the correct aspect ratio when scaling down width on narrower screens.
• Fix highlight styles not appearing in Cloze Association dropzones.
• Fix the recording trouble help link not honouring the target attribute, e.g. for opening link in a new tab/window.
• Mathcore v1.38.0:
• fixes around allowThousandsSeparator option
• fix for ignoring coefficient one functionality, to not accept mixed fractions
• fix for handling 2x vs 2\times x in equivLiteral
• fix for handling big powers

#### Bug fixes

• Fix issues with tabbing in Formula question types.

#### Bug fixes

• Fix issues related to keyboard tabbing between formula keyboard elements.

#### Polish

• Fixed issue where keyboard symbols were becoming distorted when the keyboard was at its minimum width.

#### Features

• Improve 10008 error message to acknowledge either file isnt exists or lost connection
• Support inline text and image audio player
• MathCore v1.37.1: Significant across the board speed increase.

#### Polish

• Allowing all flash tags and attributes in stimulus
• Boost formula input feature font size
• Support a, b, strong html tags for label bundles's recordAuthRememberHtml and recordAuthRememberTroubleLink
• MathCore v1.37.1: Added tests from the Learnosity and Graffiticode item databases.

#### Bug fixes

• Association arrow is now visible in print mode
• Dragging element to the edge on iOS devices should auto-scroll device's viewport
• Fix negative cube root and nth root NaN issue
• Fixed invisible character issue in mathquill
• Improve Question app error message when authentication process fails
• Long text' s remove all formatting option is now working
• Negative base should return a proper negative value on negative root
• Plotting points in graphplotting is impossible when the view is zoomed in
• Remove NULL ASCII character from the formula editor blacklist which is preventing input in image cloze formula
• Updating ASCII control character blacklist to block all control characters instead of those that are reproducible
• MathCore v1.37.1: Fix equivSymbolic comparison involving 'e' which were erroneously comparing equal.

#### Bug fixes

• Fixed issue where math parentheses were not rendering in elements that were hidden on page load

#### Bug fixes

• Fixed issue where math parentheses were not rendering in elements that were hidden on page load
• Fixed issue where keyboard shortcuts were causing validation issues by injecting empty spans to the question response area

#### Bug fixes

• Fixed auto-scrolling viewport issue when dragging element to the edge on iOS devices
• Fixed issue where plotting points in graphplotting was impossible when the view was zoomed in

#### Bug fixes

• Fixed issue where keyboard shortcuts were causing validation issues by injecting empty spans to the question response area
• Fixed issue where math parentheses were not rendering in elements that were hidden on page load

#### Bug fixes

• Improve Question app error message when authentication process fails

#### Bug fixes

• Improve Question app error message when authentication process fails

#### Features

• Add ARIA for several question types during review state
• Add ARIA-labels for audio question type
• Numberline now supports fraction with whitespace for point's position

#### Polish

• Provide meaningful error message when init options' user_id and response_id are longer than their characters limit
• Improve math question type's performance by rendering composite math questions into single element before document insertion
• Improve touch sensitive to make it easier to remove numberline plot's dot point on touch devices
• Improve ARIA label display for formula questions
• Preserve keyboard whitespace in all input fields
• Disable label edit when user is in preview/review state

#### Bug fixes

• Fix bug with formula ARIA label authoring for cloze formula
• Chart questions now will render correctly even when its container width is 0
• Fix double entry when using calculator on touch devices
• Fix bug where most of the chemistry symbols are incorrectly filtered out
• Minor ticks in Numberline plot question type will now rendered correctly when Distance set to 1/2
• Prevent cloze association question type's validation UI to overlap question's text
• Fix bug that breaks Simple chart's interaction and causes Y labels to disappear if Max Y is set less than 1
• MathCore v1.36.0:
• Fix wrong scoring of negative fractions
• Fix mathcore performance issues
• Fix equivLiteral ignoreOrder=true with polynomial equations
• Fix isSimplified with equations with zero on one side evaluate to false

#### Bug fixes

• Fix double entry when using calculator on touch devices

#### Polish

• Improve ARIA label display for formula questions

#### Bug fixes

• Fix hidden element helper to handle asynchronous race conditions
• Fix incorrectly filtering out most of the chemistry symbols

#### Polish

• Add new rulers for imagetool

#### Bug fixes

• Fix hidden element helper to handle asynchronous race conditions

#### Bug fixes

• Unset show_drag_handle for drag drop question types like sortlist, matchlist... now will hide the drag handler icon

#### Features

• Create customisable numberpad for Formula/Chemistry question types.
• Performance improvements:
• Load asset bundles in parallel of authentication.
• Clean up asset bundles to prevent duplication.
• Improve Mathquill rendering speed.
• Add seeded shuffle options to MCQ
• Allow authored MathML and LaTeX ARIA attributes.
• Brightcove video player now supports https protocol and playback inside iframe
• Mathcore v1.35.0:
• Add further support for alternate recurring decimals.
• Throw a timeout error if a process is taking too long.
• Allow different units of the same base in an expression, e.g. km and m.

#### Polish

• Add additional styling for active, focussed, and tapped states of draggable components in Association, Classification, Cloze Association, Image Cloze Association, Order List, and Sort List question types.
• Add 0 marker to default ruler images.
• Improvements to Sort List styling to make it consistent with other question types.
• Allow whitespace in LaTeX for stimulus and template.
• Align height of correct answers that are empty in review state of Cloze Dropdown.

#### Bug fixes

• Fix custom stem width not being applied for Choice Matrix.
• Fix issues related to keyboard tabbing between formula keyboard elements.
• For Dot/Line Plot and Histogram/Bar Chart, fix inability to drag columns on touchscreens when scrollable passages is applied.
• Prevent tokens flashing before being selected for Token Highlight.
• Prevent unattempted Cloze Dropdown questions validating as correct.
• Show Cloze Dropdown placeholders in review mode.
• Prevent Sort List answer getting a position index of -1.
• Prevent window resize from clearing Hotspot validation highlights.
• Show up-to-date correct answer list for Hotspot as user selects responses.
• Prevent unnecessary multiple rendering of Hotspot labels.
• Make Cloze Dropdown validate in strict mode so that null and undefined values do not match an empty string value.
• Have green/red lines in review state of Classification display when hovering.
• Prevent visual state changing when interacting with elements that are disabled in Classification, Cloze Association, Image Cloze Association, Association, Order List, Number Line, and Sort List question types.
• Prevent formula keyboard buttons names being obscured by drag handle.
• Fix Video Player feature so it can play Brightcove content again.
• Fix missing answers being marked as wrong in Cloze Dropdown review mode.
• Mathcore v1.35.0: Fix isSimplified error with repeating decimals.

#### Bug fixes

• Prenvent tokenhighlight from flashing on mobile.
• Prevent scrollable passage to scroll when dragging chart's response

#### Bug fixes

• Fix hidden scrollbar when scrollable passage is nested inside tab component or another scrollable passage.

#### Features

• Added set notation capital letters Q, N, Z, I and C to custom mathsymbols.
• Add support for whitelisting all domains passed in security.
• Make calculator draggable only when clicking on the top bar.
• Added AssistiveMML extension to improve accessibility features in MathJax.
• Added recurring decimal dot symbol to math custom symbol group.
• Upload the Image Annotation Upload response images to S3 for Submit Practice activities.
• Add alt support for Imagetool feature, and Cloze Association question.
• Treat graph plotting elements with same coordinates as the same.
• Mathcore v1.34.0:
• Added \dot, an alternative symbol for denoting recurring decimals.
• Treat Graph Plotting elements with the same coordinates as the same.
• MathJax v2.6.0:
• Fix a bug with right border symbol being rendered next to the math equation

#### Bug fixes

• Fix Image Cloze response box alignment in Question Editor.
• Allowing iframe rendering in questions to support QE custom button feature
• Override focus pseudoclass definition on .MathJax element to prevent showing an outline.
• Fix missing files for Custom Questions when built.
• Improve drag and drop keyboard accessibility.
• Fix Sortlist highlight borders.
• Hotspot question type:
• Highlight correct areas in review mode.
• Fix area colour loss in review mode.

#### Bug fixes

• Fix touch events handling for iPad
• Mathcore v1.30.4:
• Fix equivLiteral ignoreOrder with multiple polynomial factors.
• Fix equivSymbolic error with absolute value.

#### Bug fixes

• Calculator should only be draggable when clicking on the top bar.

#### Bug fixes

• Upgrade MathJax to v2.6.0 to fix a bug with right border symbol being rendered next to the math equation.

#### Bug fixes

• Upgrade MathJax to v2.6.0 to fix a bug with right border symbol being rendered next to the math equation.

#### Bug fixes

• Upgrade MathJax to v2.6.0 to fix a bug with right border symbol being rendered next to the math equation.

#### Bug fixes

• Upgrade MathJax to v2.6.0 to fix a bug with right border symbol being rendered next to the math equation.

#### Bug fixes

• Upgrade MathJax to v2.6.0 to fix a bug with right border symbol being rendered next to the math equation.

#### Bug fixes

• Upgrade MathJax to v2.6.0 to fix a bug with right border symbol being rendered next to the math equation.

#### Bug fixes

• Fix bug that would break clozedropdown validation and review mode.

#### Polish

• Improvement to internal security configuration.

#### Features

• Add imaginary and euler number to math symbols.
• Make dragdrop components CSP compliant.
• Get Hotspot question type working with new JSON structure necessitated by Question Editor integration.
• Return warning information with evaluateVerbose for math validation.
• Add thousands separator for decimals for Formula question types.

#### Bug fixes

• Prevent rendering in Cloze Dropdown responses in review mode.
• Fix mcq radio button alignment across browsers.
• Prevent 1px shift during validation of Formula question types.
• Fix Formula keyboard flicker in IE and Edge.
• Make hotspot stimulus image responsive.
• Fix issue with Formula question types where Firefox for Mac wasn't recognising when caps lock was turned off.
• Fix issue in OS X where pressing shift doesn't temporarily disable capitalisation with Formula question types.
• Fix long processing time for complex constants when validating math.
• Fix isFactorised not functioning as expected.
• Fix context issue in CSS loader.

#### Bug fixes

• Fix left and right buttons in formula groups slider on iPads

#### Bug fixes

• Fix image loader check causing error in certain question types

#### Features

• Fallback to unicode characters when Learnosity's icon fonts aren't loaded.
• Strip HTML from custom i18n labels as a defensive measure against XSS.
• Add stringMatch formula validation method to Chemistry question types.
• Complete the addition of aria labels to all question types.
• Add hotspot question type (beta).
• Conditionally load mathquill math renderer (only when needed).

#### Polish

• Ensure that all questions have the API version set.
• Various clean ups around image load handling.

#### Bug fixes

• Fix Simple Chart questions being broken when validation hasn't been defined.
• Prevent users from being prompted about unsaved responses when in review mode.
• Fix issue with image cloze questions expanding outside of container when in review mode.
• Prevent Firefox from stripping the right edge of images in Image Cloze Association questions when checking the answer.
• Have Cloze Formula questions throw the same errors as other Formula question types when the correct answer spec is invalid.
• Fix issue where dragging responses over areas with math would prevent dropping of the responses.
• Fix vertical alignment of \overline.
• Fix problems with dragging in Simple Chart when checking the answer.
• Fix the rendering of \prime.
• Fix issue where validation UI would not work when the isExpanded method is used.
• Fix issues with equivLiteral and equivSyntax methods treating 1-1 and 1+(-1) as equivalent.
• Fix equivLiteral with ignoreOrder when complex expressions are used.
• Fix equivLiteral with inverseResult not validating correctly, when different number of terms in authored and response value is used.
• Fix and \ keypad buttons not lighting up when pressed. • Fix math arrow alignment issues. • Fix various issues with rendering of response containers within Cloze Math Formula question type. • Fix error handling for Formula Handwriting. • Fix issue with fraction not rendering correctly in token highlight. #### v2.78.2 – 13th January 2016Archived #### Bug fixes • Fix the rendering of \prime. #### v2.72.14 – 13th January 2016Archived #### Bug fixes • Prevent users from being prompted about unsaved responses when in review mode. • Fix issue with image cloze questions expanding outside of container when in review mode. #### v2.69.14 – 13th January 2016Archived #### Features • Fallback to unicode characters when Learnosity's icon fonts aren't loaded. #### v2.78.1 – 16th December 2015Archived #### Bug fixes • Simplechart: fix the question type when no validation object is provided • Fix custom question type which wasn't working because of a regression #### v2.72.13 – 16th December 2015Archived #### Bug fixes • Simplechart: fix the question type when no validation object is provided • Mathcore v1.24.5: fix inequalities with polynomials #### v2.78.0 – 9th December 2015Archived #### Features • Add util that checks that images are loaded: • an overlay is shown over the question element if the images failed loading over 5 times • clicking the overlay will allow the user to retry loading the failed image assets • Add ability to unset scrollable passages via public method • Label updates use.text for security reasons
• New formula stringMatch validation method implemented
• HTML entities contained in i18n labels passed by users are now unescaped
• Add ARIA attributes to assess API

#### Polish

• Improve display of orderlist questions in review mode

#### Bug fixes

• Prevent imageclozeassociation pointer to overlap the response box
• Fix issue where response number was covering answer text in review mode for match list questions
• Fix ray validation when rays have the same starting point, slope, but different direction
• Fix disappearing validation UI when resizing browser window
• Fix overflowing images in inline items
• Fix match list review state text cropping issue
• Fix scrollablePassages images bleeding when scrollbars removed
• Fix uncloseable annotations in image upload disabled mode
• Audio: fix audioQualityCheck method for WebRTC recording
• Fix rendering laTex when is_math is false, and math_renderer is taking precedence
• Add missing CSS for overlaying features to correct their position
• Add minimum width required for imageclozeassociation's validation UI
• Fix validation of numberlineplot when number of responses is bigger than number of validation values
• Formula: fix quote symbols style & behaviour
• replace ' with ^\prime during mathjax rendering
• replace " with ^{\prime\prime} during mathjax rendering
• remove duplicate single quote from math symbol definitions
• Escape symbol information in rendered keyboard template
• Remove html from matrix & quote symbol definitions
• Make sure tabbing does not get stuck and that pressing tab always focus the correct next tabbable element
• Fix handling cases where there is no microphone available by JS audio
• Remove including miscellaneous audio noise when overwriting recordings using audioAdv by JS audio
• Mathcore v1.29.0:
• fix isExpanded method with equations
• fix ignore order with negative expressions
• restrict allowThousandsSeparator to not allow missing separators, e.g. 1000,000 will be considered a syntax error
• Mathcore v1.30.0:
• fix validation of linear equations with solution zero
• fix validation of inequalities with polynomials
• fix validation of math in IE8
• Mathcore v1.30.1: REVERT: restrict allowThousandsSeparator to not allow missing separators, e.g. 1000,000 will be considered a syntax error
• Mathcore v1.30.2: fix regression with equivLiteral when inverseResult flag is used
• Mathcore v1.30.3: fix mathcore so it works within a NodeJS environment

#### Bug fixes

• Mathcore v1.24.3: fix validation of math in IE8

#### Bug fixes

• Mathcore v1.17.6: fix validation of math in IE8

#### Bug fixes

• Mathcore v1.17.6: fix validation of math in IE8

#### Bug fixes

• WebRTC: prevent unwanted audio events queuing during main JS thread freeze
• WebRTC: beep sound not played in some edge cases

#### Features

• New formula stringMatch validation method implemented for exact string comparisons

#### Bug fixes

• Fix setScrollablePassagesContextHeight to set height to the content's height

#### Polish

• Improve display of orderlist questions in review mode

#### Bug fixes

• Fix match list review state text cropping issue
• Fix disappearing validation UI when resizing browser window
• Fix issue where response number is covering answer text in review mode for match list questions
• Fix overflowing images in inline items

#### Features

• Formula: add backslash to sets symbols
• ScrollablePassage now can readjust its content wrapper when its content changed
• Formula: add beta to greek symbols group
• Append our audioContext instance with audioWorker functionality
• Add public and internal methods for disabling and enabling questions
• Add aria attributes and amend aria label implemention
• Mathcore v1.28.0: add ability to factor out the negative number

#### Refactors

• Audio recording performance improvements
• Improved detection of potentially malicious user inputs

#### Bug fixes

• Fix math validation error after cutting a term from the answer
• Fix the issue which formula keyboard help popup appears behind keyboard
• Position rating info bubble below button
• Fix firefox responsive table image issue
• Fix clozedropdown crashing when responseValue is undefined
• Fix horizontal scrollbar issue cause by long latex values
• Fix the issue which correct answer text does not wrap in review mode
• Resolve image cloze formula keypad width issue
• Fix matrix symbol rendering in CKEditor formula keyboard menu
• Clozedropdown: fix scoring when possible_responses array is empty
• Simplechart: fix overall scoring when the number of responses are greater than the number of validation values
• Choicematrix: fix issue with scoring when response is empty
• Mathcore v1.28.0:
• equivLiteral expressions must also be equivSymbolic (fix division by zero)
• fix of inconsistent behaviour when negative numbers are present
• fix equivSymbolic to treat 6(2) and (2)6 as equivalent (treat as multiplication)
• fix mathcore to not freeze or throw exceptions when some valid expressions passed (few cases fixed)
• fix simplifying algebraic equations
• Mathcore v1.28.1: Fix bug when Mathcore is choking on ".0" with "ignoreTrailingZeros=true"

#### Bug fixes

• Fix scrollable passage to automatically resize its content wrapper when then content is changed

#### Bug fixes

• Fix the output LaTex when using \lrnexponent to be consistent with regular exponent command
• Fix scrollable passage to automatically resize its content wrapper when then content is changed

#### Bug fixes

• Revert: Add aria attributes and amend aria label implemention

#### Features

• Add allowing target attribute in HTML cleaner utility
• Order formula view items alphabetically
• Change colours for accessibility
• Improve token highlight keyboard accessibility
• Formula: create mathEvents object
• Add support for accessible drag and drop
• Add aria attributes and amend aria label implemention
• Formula: apply input area background, standardise border styling and cancel/override mathquill borders
• Mathcore v1.27.0
• add new option to equivLiteral: allowing coefficient of 1
• add \simpleFraction as an alias to \nonMixedFraction
• use equivLiteral ignoreOrder to optimize equivSymbolic

#### Bug fixes

• Disable stopping audio playback on auto save from Assess API
• Remove non-existent glyphicons referenced in CSS
• Clozeformula: ignore lone sub {{response}}
• Expand some math inputs to fit container
• Clozeformula: align different input types
• Fix clozeformula size/borders in review
• Align clozeformula responses in validation
• Don't hide unattempted clozeformula inputs
• Align imageclozeformula responses in review
• Formula: fix background transparency
• Show formulaV2 input borders in validation
• Fix issue with line breaks vanishing after pasting in longtext
• Show horizontal axis for dot plot in IE10
• Fix issue with CSS allowing host page to override response box line height
• Prevent host page CSS affecting cloze dropdown
• Highlight: Complete initialisation on image load error
• Use decimal.js to improve the precision of the calculations and properly respecting operator precedence
• Make sure that +/- is properly applied, fixing problems with adding decimal point, making sure that rad and deg are always applied to trigonometric function
• Fix disabling response buttons (point types) in number line plot
• Fix incorrect appearance when used as super and subscript
• Fix uncaught JS error when users type "\text{}" in template
• Add missing build bundles for chemistry questions
• Math question types: Add margin to fraction and superscript symbols to stop overlapping of response boxes
• Fix calculator decimal point numbers rendering
• Mathcore v1.27.0
• stop modifying a spec object by adding is_number
• fix absolute value support in equivSymbolic when using negated value
• fix validating of multiple +'s in equivLiteral
• fix issue with malfunctioning options: allow thousands separator and allow trailing zeros
• fix validating intervals using equivLiteral with order ignoring
• fix validation of iniqualities in equivLiteral, when order ignoring is set to false, and it still accepts reversed order
• fix isTrue validation when testing equations

#### Bug fixes

• Remove non-existent glyphicons referenced in CSS

#### Refactors

• Disable stopping audio playback on auto save triggered from Assess API

#### Bug fixes

• Fix issue with line breaks vanishing after pasting in longtext

#### Refactors

• Disable stopping audio playback on auto save triggered from Assess API

#### Bug fixes

• Second patch to lodash to fix iOS8 phantom length bug, removing all the references to .length

#### Features

• Mathcore v1.26.0
• add \simpleFraction as an alias for \nonMixedFraction
• add new validSyntax method for syntax checking of LaTex input

#### Refactors

• Improve validation of parameters of "append()" public method
• Formula UI: improve handling invalid LaTex and showing the error

#### Bug fixes

• Patch lodash to fix iOS8 phantom length bug
• Mathcore v1.26.0
• fix the bug with 2 numbers separated by whitespace, it was treating it as a multiplication
• fix inconsistent fraction format accepted by equivSyntax method
• Fix scrollable passage overview element jumping to top. The issue was caused by the lack of debouncing in the scrollable passage resize handler and was making scrollable passages with formula to jump/dissapear when resizing the window.
• Allow "unlimited" as value for feedback_attempts
• Image cloze association: remove jQuery actual and replace with naturalWidth in image scale feature
• Formula UI: Fix mathquill cursor bug inside fraction response boxes
• Orderlist: fix drag and drop issue when the layout is inline
• Formula UI: clicking on keypad toolbar buttons shouldn't cause dragging
• MCQ: fix shuffle options implementation to persist in a response object and be available in review and resume modes
• Audio: fix an issue in firefox where recording duration would freeze just before a given maxLength

#### v2.72.4 – 7th October 2015Archived

Patch release fixing a scrollable passage issue

#### Bug fixes

• Fix scrollable passage overview element jumping to top. The issue was caused by the lack of debouncing in the scrollable passage resize handler and was making scrollable passages with formula to jump/dissapear when resizing the window.

#### Features

• Numberline[plot], Simplechart - handle default valid_response
• Formula: support \not prefix for following LaTex commands: \subset, \subseteq, \supset, \supseteq, \ni
• Prevent validation when valid_response is untouched by the author
• Mathcore v1.25.0:
• introduce equivLiteral validation for binary operators
• isUnit: add support to a case when both arguments have no units
• add validation support to \text{} LaTex command as a separator

#### Polish

• Scrollable passage should scroll the native container when hitting its top/bottom viewport
• Allow keyboard to be draggable only 75% off the screen

#### Bug fixes

• Formulaessay: fix unexpected keyboard hide
• Fix mathquill-rendered block math styling
• Imagecloze: vertically center pointer arrows
• Imageclozetext: fix response x-position
• Choice Matrix: fix options column spacing
• Fix possible drag off the bound issue for calculator
• Fix issue with Mathjax responses merging in cloze association
• Fix left/right arrow markers on Dot/Line plot
• Fix incorrect word count for Long Text in chrome
• Fix issue with fractions not snapping to numberline drag drop
• Fix incorrect word count for Long Text in chrome
• Fix MCQ images stretched when native image resolution is larger than container without a size being set by the author
• Fix wrong validation UI in NumberLine Plot
• Simple shading: fix hover colour on locked author shaded cell which has an image
• Fix displaying superscript fraction partially
• Token highlight: fix mapping of distractor rationales and 0th-index response
• Image upload: fix logic behind showing validation button
• Fix the output LaTex when using \lrnexponent to be consistent with regular exponent command
• Mathcore v1.25.0:
• fix validation of a constant with big exponent
• fix regression of trigonometric functions with variables

#### Refactors

• Token highlight: decompose foreach loop in metadata mapping method

#### Bug fixes

• Token highlight: fix mapping of distractor rationales
• Fix incorrect word count for Long Text in chrome
• Allow keyboard to be draggable only 75% off the screen

#### Bug fixes

• Fixed stretched image in MCQ with image option

#### Features

• Added intercepting pipe (|) keypress and converting it to \abs command
• Added disabling raw latex in response area
• Added throwing error when resuming fails due to connection issues
• Audio: ADDED calculatING audio path from security timestamp on JS side
• Mathcore v1.22.1: \abs and \left| \right| are equivalent
• Mathcore v1.24.1: added support for multiple decimal point characters

#### Polish

• Enabled out-of-bound drag for calculator. Added allowing of adjusting out-of-bound percentage
• Added new selector so that MathJax reduction applies only to font boost related questions

#### Cleanups

• Limited oxidation symbol to chemistry

#### Refactors

• Simplified mathquill renderer util
• Mathcore v1.24.1: integrated L15 lib into mathcore so it's not submodule anymore

#### Bug fixes

• Formula: enabled deferring floating keyboard positioning
• Rating: fixed rendering html & math in tooltip
• Formula Essay: fixed bulleted list getting removed in IE Added check for empty content in editor util to get around the issue of content returning undefined in IE when it's in a list
• Fontsize of the features should change when the main item change
• Drag & drop elements must scroll parent viewport when being dragged outside of it
• Fixed issue with validateQuestions duplicating validation UI
• Fixed rendering scrollable passage for adaptive assessments
• Set text editor position to static for IE11 and 8 to fix cursor problems
• Fixed an issue where a zero max score on a question with an alternate response didn’t validate correctly
• Fixed few non-working editor util parameters
• Added additional image width rule to fix FF bug in Scrollable passage and MCQ
• Changed button position calculation to overcome arrow key movement issue
• Fixed fraction spacing
• Cloze dropdown: fixed issue which a user could interact with an response in review mode
• Cloze formula: fixed the issue when users could not enter values in math input field when using MathQuill as a math renderer
• Formula keyboard: fixed rendering of the square root keyboard symbol
• Mathcore v1.23.1:
• fixed order malfunctions in inequalities
• fixed location when error is thrown

#### Bug fixes

• Fix incorrect module include of lodash in Image Upload question type
• Image Annotation Upload: Fix issue with incorrect aspect ratio being applied to subsequent uploads after an earlier image is deleted

#### Bug fixes

• Fixed issue with bullet points in Long Text question on Internet Explorer

#### Features

• Added multi select option to choice matrix: use “multiple_responses” flag to enable checkboxes instead of radio buttons. Choice matrix validation rules now support nested arrays, e.g. valid_response: [[2,0], [0], [0,1]] as well as the old format: [0,1,2,3]
• Added Brightcove support for video feature type

#### Polish

• Fixed jumpy effect when validating MCQ and choice matrix questions
• Added unattempted state for cloze formula and image cloze formula
• Updated line-height of token highlight and text highlight to wrap long valid answer text
• Suppressed font style set by MathJax for chemistry questions
• Formula: updated molar mass symbol
• Removed border when validating clozeFormula, clozeChemistry, imageClozeChemistry

#### Bug fixes

• Fixed broken Validation UI of inline orderlist when long sentences are wrapped
• Fixed textinput cursor appearing behind the box when in resume mode
• Fixed duplicated suggested index number for classification, orderlist when question is validated again in Review mode
• Fixed image upload response index not showing in firefox
• Fixed inline orderlist's correct answer html syntax not rendering properly
• Fixed misaligning of labels when rendering hidden graphplotter
• Fixed missing index of not-attempted questions in review mode
• Fixed overlapping unattempted responses for cloze text inline in Review mode

#### Features

• Add max_lines ui option to formulaessay
• Created dynamic and interactive slider for group toolbar
• Added validation label support - number, upper alpha, lower alpha
• Added prevent_flash flag for audio question/feature

#### Polish

• Set default cursor position for chemistry symbols
• Updated validation UI for unstacked numberline plot and title position
• Numberline: Decreased gap betwen numerator and denominator
• Added overflow to formula input so border is always visible
• Made text editor formatting toolbar options wrap
• Adjusted simple chart to fit larger font labels
• Adjustedthe positioning of the character map

#### Cleanups

• Calculator: removed dom event listeners

#### Refactors

• Added clearing handwriting cache on editor remove
• Refactored of font boost logic

#### Bug fixes

• Fixed broken calculator in fullscreen browser
• Graph questions: fixed fullscreen offset bug
• Made getFeatures public method return an empty object if there are no features
• Added new span css rules to overcome chrome content editable bug
• Resolved display-none bug for simple chart

#### Features

• Updated correct answer hover behaviour to now be visible on the screen within a correct answer section, in review state and when showCorrectAnswer set to true
• Creating a consistent Validation UI look and feel across multiple question types
• Graphplotting: Allowing user to undo/reset incomplete polygon
• Use "disableItalics" property for chemistry questions
• Long Text and Formula Essay new options: numbered list, superscript and subscript, clear formatting
• Make text editor formatting options configurable
• API: Add getFeatures() public method

#### Polish

• Graphplotting: Prevent user from moving point too close to other points
• Long Text: Apply min-width so toolbar doesn't break

#### Bug fixes

• Validation ticks not showing for line-chart
• Fixed parallelogram rendering issue in MathJax
• Audio: call init callbacks when SWF fails to load
• Formula: fix handwriting pad sizing
• Delete formulaInput subviews on remove
• Formula Cloze: fix concatenated values from each used validation method in suggested answer
• Fixed numberline plot fraction overlapping issue
• Fix height of Formula Essay text format buttons

#### Features

• Added title and description to video and audio features
• Added oxidation symbol to chemistry group

#### Polish

• Changed scrollbar in scrollable passages to be more consistent with Assess API

#### Bug fixes

• MCQ selected style bleeds out the edge
• Fixed dragging issue with imageTool
• Fixed scrollable passage freezing on touch
• Move base font color to .lrn level
• Fixed rounding issue that was causing bottom borders to disappear on formula input and keyboard buttons
• internal changes to handwriting functionality

#### Polish

• Remove spacing caused by empty stimulus

#### Bug fixes

• Numberline Association: fix rendering of points

#### Features

• Adding atomic and polyatomic chemistry symbols
• Added chemistry group as default in chemistry question type
• Add memory functions MC,MR,M+,M- to scientific calculator

#### Polish

• Move default symbol group as a class attribute
• Calculator: changing background color to eliminate white lines
• Change buttons layout and style of formula keyboard
• Add no border style to the table
• Added audio quality check to webrtc audio recorder

#### Bug fixes

• Fixed circledot rendering issue in stimulus
• Numberline points are rendered incorrectly when using fractions
• Numberlineplot: fixed clicking tolerance to be dynamic
• Blocking infinite nesting of math symbols
• Fix cropping of dialog box when Image Upload has a short image
• Fix for deleting annotations on touchscreens

#### Features

• Adding atomic and polyatomic chemistry symbols

#### Refactors

• Chemistry symbol group loaded by default for all chemistry question types, but ignored in general math

#### Bug fixes

• Fix cropping of dialog box when Image Upload would have a short image
• Numberline points are rendered incorrectly when using fractions
• Numberlineplot: fixed clicking tolerance to be dynamic

#### Features

• Formula UI: chemistry symbols group added
• App: improving robustness of public methods
• Added option to show or hide histogram chart gridlines
• Formula keyboard: add tau and factorial symbols
• Math validation: add support for factorial symbol
• Graphplotting: scoring support for labels functionality added

#### Polish

• Basic and scientific calculator: buttons order changes
• Formula Input: Added new border styling to matrix to improve usability

#### Cleanups

• Removing JS template files that should not have been committed

#### Refactors

• Changing the way graphplotter interface is being passed to label

#### Bug fixes

• Missing border on formula input area added
• Fixed bug where formula questions in resume state would break the response value if they had > or <
• Graphplotting: Change reset method to undoing all the actions
• Disable hiding formula ui during fullscreen mode
• Clozeformula: fix disappearing keyboard
• Clozeformula: fixing calculating of container height
• Fix bug with draggable UI elements when using multi-input devices
• Math validation: fix precedence of slash
• Formula V2: fix latex rendered wrongly when validate response more than once
• Fixed an issue that was causing image tool to be able to move beyond the parent container
• Formula UI: Fixed an issue when irrelevant symbols are inserted when pressing functional keys
• Graphplotting: Fixed multiple issues related to the labeling feature

#### Bug fixes

• Fix issue where ruler/protractor could be dragged out of browser frame
• Fix issues where incorrect LaTex math format was showing in answer bubble

#### Bug fixes

• Math formula: fixing incorrect validation in equivSymbolic

#### Bug fixes

• Clozeinlinetext: added min-height to empty textinput
• Fixed scoring timeout bug

#### Features

• Adjusted spacing to be relative to font size
• equivSyntax support added to Mathcore
• Added the option to hide points on background shapes
• Storage: removed base64 encoding
• Added new symbols to formula keyboard
• Added uppercase to keyboard with Caps Lock support
• Questions API now uses precompiled templates
• Analytics in Chrome App disabled
• XHR util:
• store init state when doing a request if init never succeeded
• added support for ChromeApps and webviews

#### Bug fixes

• Reducing number of decimal places in hovered position coords
• Fix simplechart broken width when display is none
• WebRTC recorder had unsafe eval in a setTimeout
• Append public method: same view was rendered multiple times when called sequentially
• Fixing various math validation bugs

#### Features

• Added feature-id to rendered DOM element

#### Polish

• Improved SVG learnosityicon font to fix some issues in old IEs
• Formula keyboard: minimum width set to 325px

#### Cleanups

• Removed no longer necessary fontsize from audio components

#### Bug fixes

• Corrected unselectable checkboxes and radio boxes for iOS devices
• Validation of classificaation question with empty response cell fixed
• Jquery's width and height was randomly incorrectly setting the wrong em values, using css directly fixed the problem
• Fixed rendering of scrollable passages
• Numberline plot: fixing regression when validation point position is defined as a string

#### Bug fixes

• Clozeinlinetext: added min-height to empty textinput

#### Features

• Graphplotter: stop plotting over an existing point
• New public method getGroupScore()
• New question level public method mapValidationMetadata()

#### Polish

• Image Upload: improve image compression so that student-uploaded images look good, even on retina
• Classification: correct size of question where only one item is dropped into the table

#### Bug fixes

• Audio player: block player now allows turning off waveform while keeping all other UI elements
• Formula Essay: set cursor to end of last line when pressing backspace
• Allow paragraph and heading tags in tables
• Formula:
• fix bug in chrome where squares would appear instead of the regular cursor
• fix bug where handwriting could not be retrieved in review mode
• make dot visible when using handwriting
• expand matrix brackets for new row
• fix unwanted draggability on 'block' and 'block-on-focus' keyboards
• performance fixes for handwriting
• ensure first toolbar item is selected on initialisation of keyboard
• show correct shortcut hints
• Imagetool: fix issue with custom images where the image would shrink and expand as it was moved to and from the viewport edges if dimensions were not defined
• Sort List: fix bug where null value crashed question
• Scrollable Passages: fix bug in rendering when rendering inside a container that has display: none CSS applied to it
• Graphplotting: fix issues with dragging points to the edge of graph

#### Bug fixes

• MathQuill cursor rendering with black thick box in Chrome v40.xx

#### Bug fixes

• Fixing mathcore bug wrongly validating double-minus numbers, e.g. -(-1)

#### Bug fixes

• Fix overlay positioning of stimulus features
• WebRTC recorder: fix JavaScript error thrown when access to user media is denied in browser
• Fix setScrollablePassagesContextHeight to set height to the content's height

#### Bug fixes

• Audio: fix audioQualityCheck public method when using WebRTC recording

#### Polish

• Improve display of orderlist questions in review mode

#### Bug fixes

• JavaScript Audio question has a default upload status for when it’s not attempted
• Fix match list review state text cropping issue
• Fix disappearing validation UI when resizing browser window
• Fix issue where response number is covering answer text in review mode for match list questions
• Fix overflowing images in inline items
• Fix ray validation when rays have the same starting point, slope, but different direction
• Prevent imageclozeassociation pointer to overlap the response box

#### Bug fixes

• Internal fix for javascript audio worker script

#### Bug fixes

• Second patch to lodash to fix iOS8 phantom length bug, removing all the references to .length
• Image cloze association: reverted removal of jQuery actual and replacement with naturalWidth in image scale feature

#### Bug fixes

• Second patch to lodash to fix iOS8 phantom length bug, removing all the references to .length

#### Bug fixes

• Patch lodash to fix iOS8 phantom length bug

#### v2.73.2 – 7th October 2015Archived

Patch release fixing a scrollable passage issue

#### Bug fixes

• Fix scrollable passage overview element jumping to top. The issue was caused by the lack of debouncing in the scrollable passage resize handler and was making scrollable passages with formula to jump/dissapear when resizing the window.

#### Features

• Add resize detection to scrollable passage
• Scrollable passages now keep content scroll position

#### Bug fixes

• Fixed scrollable passage regression that prevents drag drop item to scroll its container.
• Fix text alignment in choice matrix question type

#### Bug fixes

• Fix Image Cloze response box alignment in Question Editor.
• Fix cell selection in Shading question for touch devices.

#### Bug fixes

• Mathcore v1.24.2: Fix bug when Mathcore is choking on ".0" with "ignoreTrailingZeros=true"

#### Bug fixes

• Remove non-existent glyphicons referenced in CSS

#### Bug fixes

• Second patch to lodash to fix iOS8 phantom length bug, removing all the references to .length
• Image cloze association: reverted removal of jQuery actual and replacement with naturalWidth in image scale feature

#### Bug fixes

• Patch lodash to fix iOS8 phantom length bug
• Image cloze association: remove jQuery actual and replace with naturalWidth in image scale feature

#### v2.72.3 – 1st October 2015Archived

Patch release containing v2.73 scrollable passage updates

#### Features

• Add resize detection to scrollable passage
• Scrollable passages now keep content scroll position

#### Polish

• Scrollable passage should scroll the native container when hitting its top/bottom viewport

#### Bug fixes

• Fixed scrollable passage regression that prevents drag drop item to scroll its container.

#### Bug fixes

• Fixed stretched image in MCQ with image option

#### Refactors

• Added intercepting pipe (|) keypress and convert it to \abs command
• Mathcore v1.22.1 - enabled \abs and \left| \right| commands as equivalent for validation purposes

#### Bug fixes

• Fixed issue with validateQuestions duplicating validation UI
• Fixed the issue when users could not enter values in math input field when using MathQuill as a math renderer
• Enabled Drag & drop elements to scroll parent viewport when being dragged outside of it
• Added additional image with rules to fix FF responsive image width bug
• Fixed issue when user could interact with a response in review mode

#### Features

• Enabled allowing value to be passed to equivSyntax method
• Allowing border attribute in HTML cleaner utility
• Formula: more natural integral editing added
• Mathcore v1.21.0: added support for !=, \ne and \approx
• Mathcore v1.22.0: sets subtraction added using \backslash

#### Cleanups

• Image Upload: remove logging when undefined el's encountered

#### Refactors

• Webrtc audio slices input audio chunk to fit remaining duration
• Image Upload: make toolbar subview render consistent

#### Bug fixes

• Updated jsxgraph pointerEvent to support Edge and IE11+
• Updated hover colours for selected and non-selected cells
• Image Upload: filtering out undefined ui elements
• Deleted aspect ratio when deleting a response image
• Fixed issue with validateResponse() in preview for clozeDropdown
• Fixed calling renderMath when Questions API not initialized
• Fixed charts not working on Windows Surface RT
• Fixed height in the number line association as wasn't working
• Fixed symbols on slider which were displaying out of alignment on IE and Firefox
• Fixed not validating null value in close drop down and text
• Formula: placing cursor after creating \int
• Fixed empty value not validating in the cloze text
• Long text: fixed bug buggy bullet points
• Fixed position of suggested answer points when with math content
• Fixed selected cell count issue when author shaded cell are unlocked
• Mathcore v1.21.0
• fixed equivSyntax not recognizing minus as additive
• fixed bug when equivSymbolic accepts 0/0 equivalent to 0
• fixed bug with trailling zeros and thousands separator together
• Mathcore v1.22.0: fixed a bug when equivSymbolic treats 0 equivalent to empty string

#### Bug fixes

• Add additional image with rules to fix FF responsive image width bug
• Fix stretched image in MCQ with image option
• Fix firefox responsive table image issue

#### Features

• Formula UI: Add keyboard_below_response_area flag
• Graphplotting: Enable customisable toolbar controls
• Added not less than and not greater than symbols to mathSymbols
• Allowed empty value when using equivLiteral in math questions
• Mathcore v1.19.0
• added cancelling common variables in equivSymbolic
• Mathcore v1.20.0
• added alternative latex support for vector notation
• added support for degrees as arugments for trigonometric functions
• Mathcore v1.20.1
• Added support for \ne, != and \approx
• External client CSS
• clients can now provide a link to external CSS files that should be applied to Learnosity components
• Changed epsilon symbol on keyboard to use \varepsilon latex

#### Polish

• Added default 'none' value for activity course_id
• Aligned the validation icon to the right of choice matrix's inline mode
• Updated validation icon for choicematrix inline

#### Bug fixes

• Delay formulaessay keyboard creation until after question view has been rendered
• Fix bug which causes applying bullet point multiple times to break the entire question on IE
• Polyatomic should render with offset superscript
• Fixed the size of mathquill textarea within image cloze formula
• Mathcore v1.18.0
• ignoreOrder method fixed when used with negatives
• got rid of allowDecimals flag
• fixed comparison of decimals and fraction with an exponent
• fixed incorrect validation of inequalites when negatives used
• Mathcore v1.19.0
• fixed equivSyntax to understand that minus is additive
• fixed \xrightarrow validation
• fixed handling of \pi when using equivSymbolic
• fixed tolerance support in equivValue
• Mathcore v1.20.0
• equivSymbolic accepting 0/0 as equivalent to 0
• fixed arithmetic operations involving \pi
• Formula Input: fixed the issue with cursor not disappearing when moving between questions
• Formula UI: fixed florin symbol spacing issue
• Fixed failing validation on some question types authored with a score set to zero
• Numberline Association: blocked dragging of axis
• Fixed max selection feature in Simple Shading for questions with a background image
• Fixed matrix symbol in math keyboard in Firefox and Internet Explorer
• Fixed inconsistent behaviour of Check Answer button in Token Highlight, Numberline Plot and Image Upload

#### Bug fixes

• Simplechart: fix the question type when no validation object is provided

#### Bug fixes

• Fix ray validation when rays have the same starting point, slope, but different direction

#### Bug fixes

• Fix math validation error after cutting a term from the answer
• Fix matrix symbol rendering in CKEditor formula keyboard menu

#### Bug fixes

• Remove non-existent glyphicons referenced in CSS

#### Bug fixes

• Formula UI: fix mathquill cursor bug inside fraction response boxes
• Patch lodash to fix iOS8 phantom length bug

#### Bug fixes

• Formula keyboard: fixed rendering of the square root keyboard symbol
• Mathcore v1.17.5: fixed the location of the error when invalid parameters passed

#### Refactors

• Added intercepting pipe (|) keypress and convert it to \abs command
• Added allowing value to be passed to equivSyntax method
• Mathcore v1.17.3 - enabled \abs and \left| \right| commands as equivalent for validation purposes

#### Bug fixes

• Updated jsxgraph pointerEvent to support Edge and IE11+
• Mathcore v1.17.4 - fixed minus in equivSyntax validation method

#### Bug fixes

• Regression fix: Mathcore v1.17.1 broke validation of \ne and \approx. Added also != support.

#### Bug fixes

• Regression fix: Mathcore v1.17.0 broke validation of comparison operators

#### Bug fixes

• Fixed the size of mathquill textarea within image cloze formula

#### Features

• Dynamic height for numberline question enabled
• Added limiting number of responses per drop zone
• Added 3x3 and 1x1 matrix insertion buttons, and updated button labels for 3 others: adding column, adding row and inserting 2x2 matrix
• Setting max selection introduced for simple shading question type
• Enabled math_renderer flag as an activity parameter
• jQuery updated to v1.11.3 (from v1.10.2)

#### Polish

• small: margin-left 0.5em
• normal: margin-left 1.5em
• large: margin-left 2.5em
• Formula: showing unrecognised latex in red enabled
• Updated Native Promise Polyfil to v0.8.0
• Made mathquill.revert() clean up cache
• Fix underset alignment & padding

#### Cleanups

• Added grams/mol to chemistry symbol group

#### Bug fixes

• Drag and drop CSS for classification fixed
• Fixed incorrect symbol reference in Miscellaneous symbols group
• Fixed grouping symbol width calculation
• Fixed jumpy experience when clicking on answer in classification
• jQuery: Fixed extra spacing inserted before inline element
• MathCore bug fixes:
• fixed handling of \text command so it doesn't go into infinite loop
• fixed treating < and > by equivSymbolic - not the same anymore
• fixed large exponent numbers (above 9 digits)
• Changed block keyboard width to percentage to resolve scaling issue
• Fix overlapped suggested answer items during review mode when height is 'auto'
• Added missing border for highlighted cell in classification
• Added default width to block keyboard with no symbol groups
• Fixed numberline association suggested answer: it was misaligned when the draggable item's size is smaller than the drop zone's size

#### Bug fixes

• Fixed interal caching issue affecting v2.68.1

#### Bug fixes

• Fixed showing Formula UI when focusing on response boxes

#### Features

• Added activity state to sync message
• Added support percentage size for association's response
• All greek letters enabled in Formula UI
• Added disallowing chemistry symbols in formulaV2
• Enabled MathQuill to render all math instead of MathJax

#### Polish

• Removed text-decoration for image highlight line colour trigger
• Added highlight border for classification's dropzones
• Added image highlight multiple line color support
• Updated unit-test for CanvasDrawing line-colour
• Formula UI: Added lowercase epsilon to greek symbols group

#### Bug fixes

• Scrollable passage scrolls up automatically when dragging in drag & drop question
• Disabled labels in non-block layouts
• Added proper clearing of handwriting result
• Fixed incorrect latex after moving cursor to start of text block
• Fix dragdrop utils for scrollable passage in Firefox

#### Bug fixes

• Fix math validation error after cutting a term from the answer

#### Bug fixes

• Highlight: Complete initialisation on image load error
• Remove non-existent glyphicons referenced in CSS

#### Bug fixes

• Second patch to lodash to fix iOS8 phantom length bug, removing all the references to .length

#### Bug fixes

• Orderlist: fix drag and drop issue when the layout is inline
• Formula UI: fix mathquill cursor bug inside fraction response boxes
• Patch lodash to fix iOS8 phantom length bug

#### Bug fixes

• Fix issue with Mathjax responses merging in cloze association
• Fix wrong validation UI in NumberLine Plot

#### Bug fixes

• Fixed issue with validateQuestions duplicating validation UI
• Formula keyboard: fixed rendering of the square root keyboard symbol
• Mathcore v1.17.5: fixed the location of the error when invalid parameters passed

#### Refactors

• Added intercepting pipe (|) keypress and convert it to \abs command
• Added allowing value to be passed to equivSyntax method
• Mathcore v1.17.3 - enabled \abs and \left| \right| commands as equivalent for validation purposes

#### Bug fixes

• Updated jsxgraph pointerEvent to support Edge and IE11+
• Fixed the issue when users could not enter values in math input field when using MathQuill as a math renderer
• Mathcore v1.17.4 - fixed minus in equivSyntax validation method

#### Bug fixes

• Regression fix: Mathcore v1.17.1 broke validation of \ne and \approx. Added also != support.

#### Bug fixes

• Regression fix: Mathcore v1.17.0 broke validation of comparison operators

#### Features

• Enabled MathQuill to render all math instead of MathJax

#### Bug fixes

• Fixed formula handwriting not clearing properly

#### Polish

• Fixed jumpy effect when validating MCQ and choice matrix questions
• Added unattempted state for cloze formula and image cloze formula
• Updated line-height of token highlight and text highlight to wrap long valid answer text
• Removed border when validating clozeFormula, clozeChemistry, imageClozeChemistry

#### Bug fixes

• Fixed broken Validation UI of inline orderlist when long sentences are wrapped
• Fixed duplicated suggested index number for classification, orderlist when question is validated again in Review mode
• Fixed image upload response index not showing in firefox
• Fixed inline orderlist's correct answer html syntax not rendering properly
• Fixed misaligning of labels when rendering hidden graphplotter
• Fixed missing index of not-attempted questions in review mode
• Fixed overlapping unattempted responses for cloze text inline in Review mode

#### Bug fixes

• Resolved display-none bug for simple chart

#### Polish

• Update Validation UI not attempted state for some questions by removing the questions' dash-line
• Update Validation UI review state for classification question type

#### Bug fixes

• Mathjax is not showing after classification question is validated
• Fixing nested response background in cloze formula
• Fixing suggested response for few question types
• Fixing broken numberline association question when changing font-size from xxlarge, xlarge, large to normal, small

#### Features

• Hiding unused columns in formula input UI
• Added font scaling option to formula related questions
• Handwriting recognition: custom grammar added
• Formula: UI for equivSyntax validation method

#### Polish

• Remove unnecessary space caused by empty stimulus

#### Bug fixes

• Fixing rendering of points in numberline association
• Formulaessay: fix handwriting pad sizing
• Handling no response from handwriting api added
• Fixed MCQ options alignment issues with paragraphs in options
• Fix Scrollable Passages excess height when not enough content to necessitate scroll
• Image Upload: set correct type and initial value for responses; remove 300ms touch delay; fix annotation content not being set on contract; and fix bug in IE8

#### Polish

• Remove unnecessary space caused by empty stimulus