================================
CHANGES MADE IN THE LAST 3 YEARS
================================

17.4.0 (6th January 2024)
-------------------------
o Support for WCAG 2.2, which is now the default
o Changes to WCAG 2.1 mean that the 'Do 4.1.1' option and SC 4.1.1 tests have been removed
o The next major release (v18.0, due May 2024) will see some deprecated items removed:
  - The Embedded version
  - The old (pre-17.0) report format
  - Also note that our extensions will now only work with v17.1.0 or later
o Report improvements:
  - Complete removal of JQuery for performance
  - Automatic support for dark mode
  - Image improvements
  - When blocked, the Test and Basic versions now write the results to a temporary folder
o Support for macOS Sonoma
o Accessibility test updates and improvements
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 24 December 2023
  - WCAG 2.2 updated to 05 October 2023
  - WCAG 2.1 updated to 21 September 2023
  - ARIA in HTML updated to 21 December 2023
  - HTML Accessibility API Mappings 1.0 updated to 04 December 2023
  - Core Accessibility API Mappings 1.2 updated to 02 November 2023
  - CSS Backgrounds and Borders Module Level 3 updated to 19 December 2023
  - CSS Images Module Level 3 updated to 18 December 2023
  - CSS Values and Units Module Level 4 updated to 18 December 2023
  - CSS Text Module Level 4 updated to 20 October 2023
  - CSS Paged Media Module Level 3 updated to 14 September 2023
  - CSS View Transitions Module Level 1 updated to 5 September 2023
  - CSS Text Module Level 3 updated to 3 September 2023
o Bug Fixes:
  - When spelling mistakes were corrected, the results were not dynamically updated
  - 'style' attributes with functions within functions caused false E703 (mismatched parentheses) errors

17.3.0 (2nd September 2023)
---------------------------
o The 32-bit Windows Pro version is now only available for download on demand. This is the last release that will support 32-bit Windows.
o Accessibility test updates and improvements
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 29 August 2023
  - ARIA in HTML updated to 27 August 2023
  - HTML Accessibility API Mappings 1.0 updated to 25 August 2023
  - Core Accessibility API Mappings 1.2 updated to 25 August 2023
  - WCAG 2.2 (PR) updated to 20 July 2023
  - WAI-ARIA 1.2 updated to 06 June 2023
  - CSS View Transitions Module Level 1 updated to 3 August 2023
  - CSS Anchor Positioning updated to 29 June 2023
  - Scroll-driven Animations updated to 6 June 2023
  - CSS Animations Level 2 updated to 2 June 2023
  - CSS Containment Module Level 3 updated to 18 August 2022
o Bug Fixes:
  - Further CSS @media fixes with nested parentheses
  - Issue E9603 was only reported on the first <iframe> on a page with this problem
  - The <script> 'type' attribute did not allow the full range of valid values

17.2.0 (6th May 2023)
---------------------
o Accessibility testing validated as consistent with all approved and many proposed ACT Rules
o WCAG 2.2 (CR) and WCAG 2.0 can now be selected for accessibility testing
o New option to test for SC 4.1.1 when running WCAG 2.2 tests for parity with WCAG 2.1
o Now accepts and performs testing on Custom Elements
o With Validate DOM: Any open Shadow DOM is now attached to the DOM for testing
o Nested <iframe> 'srcdocs' are now validated
o Several new accessibility tests and improvements to existing tests added
o Updated list of User Agents. To apply the updates use the 'R' button on the 'Edit Agents' dialog
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 28 April 2023
  - HTML Accessibility API Mappings 1.0 updated to 03 May 2023
  - WAI-ARIA 1.2 updated to 28 March 2023
  - ARIA in HTML updated to 24 March 2023
  - WCAG 2.2 (CR) updated to 25 January 2023
  - CSS Box Model Module Level 3 updated to 6 April 2023
  - CSS Values and Units Module Level 4 updated to 6 April 2023
  - CSS Positioned Layout Module Level 3 updated to 3 April 2023
  - CSS Inline Layout Module Level 3 updated to 1 April 2023
  - CSS Display Module Level 3 updated to 30 March 2023
  - CSS Text Module Level 4 updated to 29 March 2023
  - CSS Overflow Module Level 3 updated to 29 March 2023
  - CSS Overflow Module Level 4 updated to 21 March 2023
  - CSS Animations Level 1 updated to 2 March 2023
  - CSS Box Alignment Module Level 3 updated to 17 February 2023
  - CSS Images Module Level 4 updated to 17 February 2023
  - CSS Speech Module Level 1 updated to 14 February 2023
  - CSS Backgrounds and Borders Module Level 3 updated to 14 February 2023
  - CSS Text Module Level 3 updated to 13 February 2023
  - CSS Easing Functions Level 1 updated to 13 February 2023
o Bug Fixes:
  - Application could fail with <iframe> 'srcdoc' containing <meta> with 'content' attribute
  - Application could fail with absolute paths to missing files in the Start page
  - CSS @media with nested parentheses were not dealt with properly
  - Issue E6882 was miscategorised as a WCAG21 error instead of a HTML error
  - Using a CI version with an incompatible browser extension would try to display a dialog linking to the Pro version download, even on headless systems
  - In some error situations the CI version would fail to stop
  - In certain cases the CI version would cache the previous values of options

17.1.0 (7th January 2023)
-------------------------
o Issues options reorganised and new options added:
  - The 'Error' type can now be ignored
  - New 'Except these' option
  - New option to 'Ignore -tv- markup'
o New 'API compatible' option for CI users
o The contents of <iframe> 'srcdoc' are now validated
o Improvements to reports including:
  - When available the Page report now includes the "Referer"
  - More links from issues to the reference have been added
o UI updates to the application including:
  - New macOS-like, light and dark themes
  - Auto-selection of separate themes when the O/S is light or dark
  - The Heritage themes have now been removed
o Support for macOS Ventura
o Support for Manifest v3 extensions, out later in 2023
o Accessibility test updates and improvements, with several new tests added
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 26 December 2022
  - HTML Accessibility API Mappings 1.0 updated to 12 December 2022
  - Core Accessibility API Mappings 1.2 updated to 22 November 2022
  - ARIA in HTML updated to 21 December 2022
  - CSS Text Module Level 4 updated to 31 December 2022
  - CSS Ruby Annotation Layout Module Level 1 updated to 31 December 2022
  - CSS Overflow Module Level 4 updated to 31 December 2022
  - CSS Overflow Module Level 3 updated to 31 December 2022
  - CSS Pseudo-Elements Module Level 4 updated to 30 December 2022
  - CSS Values and Units Module Level 3 updated to 01 December 2022
  - CSS View Transitions Module Level 1 updated to 24 November 2022
  - CSS Display Module Level 3 updated to 18 November 2022
  - CSS Shapes Module Level 1 updated to 15 November 2022
  - CSS Inline Layout Module Level 3 updated to 14 November 2022
  - Selectors Level 4 updated to 11 November 2022
  - CSS Box Model Module Level 4 updated to 03 November 2022
  - CSS Box Model Module Level 3 updated to 03 November 2022
  - CSS Color Module Level 4 updated to 1 November 2022
  - CSS Containment Module Level 1 updated to 25 October 2022
  - CSS Values and Units Module Level 4 updated to 19 October 2022
  - CSS Containment Module Level 2 updated to 17 September 2022
  - CSS Positioned Layout Module Level 3 updated to 1 September 2022
o Bug Fixes:
  - For Test, Basic and Pro (without CSS validation), some CSS attributes that hide elements were not being applied
  - Potential for false negatives with 'id' matching for 'usemap','list', and 'headers' attributes
  - Potential for false positives for <li> and <tr> when parent had presentation role
  - <iframe> allowed content within the start/end tags
  - 'sandbox' was not allowed to have an empty value
  - 'aria-relevant' didn't accept the value 'all'
  - Linux tray icon never displayed the menu

17.0.1 (15th September 2022)
----------------------------
o Bug Fixes:
  - With multi-page validation the Summary report should always display the Pages tab (not the Page tab) even if only 1 page with issues
  - End tags were allowed after </html>
  - Test version File Menu had unnecessary separators
  - Several minor report formatting issues fixed

17.0.0 (3rd September 2022)
---------------------------
o New tabbed report format introduced for a cleaner, clearer look:
  - Old Issues report merged into Summary for easier location of issues and where they occur
  - Page report now includes an Issues tab, for an alternative view of the issues
  - All Issues tabs contain descriptions of the issue, removing the need to use the reference
  - The Summary and Page reports are merged when only 1 page tested
  - The slow javascript show/hide options are no longer required and have been removed
  - Issues are now fully reported by the 4 types, instead of just Errors and Warnings
  - An option to still use the pre-17.0 format has been added
o Common Page report changes:
  - Page layouts are now bordered and line numbers highlighted for clarity
  - All issue messages are now prefixed with their validation type for easier separation
  - CSS at-rule/selector errors have clearer formatting
o The issue numbering system has changed, to allow clearer descriptions and advice, and easier targeting of options:
  - Many issues have now been subdivided into more distinct cases
  - Where subdivisions occur, the old number is extended by a digit. For example E609 has now been split into E6091 to E6098.
  - Leading zeroes are no longer required. For example E005 becomes E5
  - Fully backwards compatible, so no changes to existing options are required
  - When using an old number, the report will display a mapping to the new one(s)
o UI improvements on macOS
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 29 August 2022
  - HTML Accessibility API Mappings 1.0 updated to 19 July 2022
  - Core Accessibility API Mappings 1.2 updated to 26 May 2022
  - CSS Color Module Level 4 updated to 5 July 2022
  - CSS Custom Properties for Cascading Variables Module Level 1 updated to 16 June 2022
  - CR CSS Color Adjustment Module Level 1 updated to 14 June 2022
o Bug Fixes:
  - CSS properties with badly escaped values caused internal error
  - Isolated systems eventually deactivated, but could not be reactivated
  - HTML5 false positive for 'class' attribute with repeated items
  - When upgrading from within the app, the Windows (.msi) version displayed a Windows installer message and failed

16.7.0 (14th May 2022)
----------------------
o Accessibility test updates and improvements, and new tests added
o UI improvements including:
  - A 'password reveal' button for hidden fields
  - A 'clear' button for all text fields
  - The 'Integrated Menu' menu option has been moved to the Themes dialog
  - Several new customisation options added to the Themes dialog
  - Improved progress bar, and better text contrast in core themes
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 10 May 2022
  - HTML Accessibility API Mappings 1.0 updated to 04 May 2022
  - Core Accessibility API Mappings 1.2 updated to 15 February 2022
  - Selectors Level 4 updated to 7 May 2022
  - CSS Text Module Level 4 updated to 5 May 2022
  - CSS Will Change Module Level 1 updated to 5 May 2022
  - CSS Text Decoration Module Level 3 updated to 5 May 2022
  - CSS Text Decoration Module Level 4 updated to 4 May 2022
  - CSS Color Module Level 4 updated to 28 April 2022
  - Media Queries Level 3 updated to 05 April 2022
  - CSS Conditional Rules Module Level 4 updated to 17 February 2022
  - CSS Color Adjustment Module Level 1 updated to 10 February 2022
  - CSS Color Module Level 3 updated to 18 January 2022
  - CSS Cascading and Inheritance Level 4 updated to 13 January 2022
  - CSS Conditional Rules Module Level 3 updated to 13 January 2022
  - Media Queries Level 4 updated to 25 December 2021
  - CSS Box Alignment Module Level 3 updated to 24 December 2021
o Bug Fixes:
  - Broken Link errors with 'id' attributes containing a '%' character
  - False positive for <link> when using 'imagesrcset' instead of 'href'
  - Missing WCAG v2 and HTML5 warnings when the <html> tag was missing
  - Redirected links were sometimes tested despite being excluded
  - Missing semicolon on report with CSS issues

16.6.0 (4th January 2022)
-------------------------
o "Apple M" build of all products made available
o Minor UI changes and updates
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 21 December 2021
  - ARIA in HTML updated to 09 December 2021
  - WAI-ARIA 1.2 updated to 08 December 2021
  - CSS Overflow Module Level 3 updated to 23 December 2021
  - CSS Fonts Module Level 5 updated to 21 December 2021
  - CSS Fonts Module Level 4 updated to 21 December 2021
  - Media Queries Level 5 updated to 18 December 2021
  - CSS Box Sizing Module Level 3 updated to 17 December 2021
  - CSS Values and Units Module Level 4 updated to 16 December 2021
  - CSS Positioned Layout Module Level 3 updated to 16 December 2021
  - CSS Color Module Level 4 updated to 15 December 2021
  - CSS Custom Highlight API Module Level 1 updated to 15 December 2021
  - CSS Scrollbars Styling Module Level 1 updated to 09 December 2021
  - CSS Cascading and Inheritance Level 4 updated to 03 December 2021
  - CSS Ruby Annotation Layout Module Level 1 updated to 02 December 2021

16.5.0 (4th December 2021)
--------------------------
o Check for Updates option can now download and install new releases
o CI version improvements:
  - New -showsource option displays the page source for easier debugging
  - Easier activation key management with new names and new -showkey option
  - Web API now returns -showresultspath value in X-Results-Path header
o Support for Windows 11
o Support for macOS Monterey
o Updated documentation to be more accessible
o Moved to Adoptium OpenJDK 17 for LTS support
o Code improvements and performance enhancements
o UI updates to desktop applications
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 30 November 2021
  - WAI-ARIA Authoring Practices 1.2 updated to 29 November 2021
  - ARIA in HTML updated to 30 September 2021
  - HTML Accessibility API Mappings 1.0 updated to 13 August 2021
  - CSS Custom Properties for Cascading Variables Module Level 1 updated to 11 November 2021
  - CSS Transforms Module Level 2 updated to 9 November 2021
  - CSS Values and Units Module Level 4 updated to 16 October 2021
  - CSS Cascading and Inheritance Level 4 updated to 15 October 2021
  - CSS Multi-column Layout Module Level 1 updated to 12 October 2021
  - CSS Scrollbars Module Level 1 updated to 8 September 2021
  - CSS Display Module Level 3 updated to 3 September 2021
  - CSS Masking Module Level 1 updated to 5 August 2021
  - CSS Color Module Level 3 updated to 5 August 2021
o Bug Fixes:
  - Was following links to browser extension files
  - Some help links and tooltips in the desktop applications were not working
  - Default code spelling option was not being saved
  - Some of the options being used were not displayed on the results pages

16.4.0 (7th August 2021)
------------------------
o New Web API for the CI version:
  - Use HTTP calls to control the CI version from another application for easy integration
  - Works on headless systems
  - Replaces 16.3's limited Selenium solution (which is no longer supported)
  - Works with any Selenium programming language and browser combination
o You can now ignore CSS issues by property name, at-keyword, selector, or combinations
o You can also now ignore issues using combinations of elements and classes
o Command line improvements for Pro/CI/Emb versions:
  - Removed dependency that spell check options must appear after '-spellcheck'
  - Many options can now be 'removed' by appending ':remove'
  - Browser tabs opened during DOM testing are now removed, for bulk testing
  - Instead of editing the scripts provided you can now pass parameters to them
o More accurate stopping of link checking when following remote links
o Improvements to -tv-* ignore classes to cover more scenarios
o More feedback and more forgiving during activation
o Easier updating from within the application with direct links to downloads
o Windows and macOS applications repackaged
o Minor UI improvements
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 30 July 2021
  - ARIA in HTML updated to 27 July 2021
  - CSS Fonts Module Level 5 added
  - CSS Fonts Module Level 4 updated to 29 July 2021
  - CSS Counter Styles Level 3 updated to 27 July 2021
  - CSS Backgrounds and Borders Module Level 3 updated to 26 July 2021
  - CSS Values and Units Module Level 4 updated to 15 July 2021
  - CSS Color Adjustment Module Level 1 added
  - CSS Color Module Level 4 updated to 1 June 2021
  - CSS Box Sizing Module Level 4 updated to 20 May 2021
  - CSS Text Module Level 3 updated to 22 April 2021
  - CSS Easing Functions Level 1 updated to 1 April 2021
o Bug Fixes:
  - False positives with some ARIA attributes on <input> elements
  - False positives with E908 accessible name test due to not collapsing white-space
  - Test and Basic failed when CSS properties used without any value
  - The macOS installer was not displaying the licence
  - False positive due to link testing 'usemap'
  - With local pages, redirects to paths starting with '/' were not being resolved correctly
  - 'Ignore other domains' option caused failure with urls that don't contain a host name

16.3.0 (3rd April 2021)
-----------------------
o Support for contrast testing using opacity and alpha
o When testing against WCAG 2.1 you can now exclude CSS pages
o Additional WCAG 2.1 tests added
o Warning when find http link to the same site on a https page
o Improved testing of fragments on links to same site
o Results pages tidy up, plus live links with link errors
o You can now add extra command line options to override what's in -properties
o CI version now has support for Selenium
o Minor improvements to the UI
o Tests updated in line with official specifications:
  - HTML5 Living Standard updated to 30 March 2021
  - ARIA in HTML updated to 28 March 2021
  - WAI-ARIA 1.2 updated to 02 March 2021
  - CSS Cascading and Inheritance Level 4 updated to 19 March 2021
  - CSS Cascading and Inheritance Level 3 updated to 11 February 2021
  - CSS Box Sizing Module Level 3 updated to 17 March 2021
  - CSS Text Module Level 3 updated to 16 March 2021
  - CSS Basic User Interface Module Level 4 updated to 16 March 2021
  - CSS Scroll Snap Module Level 1 updated to 11 March 2021
  - CSS Ruby Annotation Layout Module Level 1 updated to 10 March 2021
  - CSS Multi-column Layout Module Level 1 updated to 12 February 2021
  - CSS Pseudo-Elements Module Level 4 updated to 31 December 2020
  - CSS Backgrounds and Borders Module Level 3 updated to 22 December 2020
  - CSS Containment Module Level 1 updated to 22 December 2020
  - CSS Box Model Module Level 3 updated to 22 December 2020
  - CSS Display Module Level 3 updated to 18 December 2020
  - CSS Grid Layout Module Level 2 updated to 18 December 2020
  - CSS Grid Layout Module Level 1 updated to 18 December 2020
  - CSS Images Module Level 3 updated to 17 December 2020
  - CSS Containment Module Level 2 updated to 16 December 2020
  - CSS Custom Highlight API Module Level 1 updated to 08 December 2020
  - CSS Conditional Rules Module Level 3 updated to 8 December 2020
  - Picture-in-Picture added
  - CSS Overflow Module Level 4 added
  - CSS Image Values and Replaced Content Module Level 4 added
o Bug Fixes:
  - Links to issues were missing from the Issue Report
  - Forms were not being submitted when a <base> tag was present