- Update to 2.1.0
* New Features
- assign menu accelerators P - &Plugins, and K - Chec&kpoints (thank you BeckyEbook)
- add ability to change keyboard focus using keyboard shortcuts or menus to BookBrowser, Preview, CodeView, ClipsWindow, and TableOfContents Windows
- preserve Media Overlay Active Classes when deleting unused classes
- Goto Link Or Style (or Ctrl-Clicking on a class will now search selectors with combinators if nothing found in normal css classes
- update to a newer Spanish hunspell dictionary
- overhaul of Building on Linux documentation
- update 3rdparty zlib to version 1.3.1 for security and other bug fixes
- update 3rdparty pcre2 to version 10.43 for security and other bug fixes
- update to Qt 6.6.2 for security fixes, accessibility improvements
- allow cancelling of Save if mend on save set and not well formed
- Windows users can now set the SIGIL_USE_FREETYPE_FONTENGINE environment variable to more fully support woff and woff2 fonts
* Bug Fixes
- multiple bug fixes from Qt 6.6.2 such as the transient child window resize bug on Windows, etc
- fix QuickParser bug when parsing attribute names not properly ignoring all legal whitespace
- make OPF parsing robust to alternative whitespace usage as well
- fix creation of thumbnails of svg images in SelectFiles and Image Report for macOS
- fix svg rendering in QtSvg by filtering out desc and title tags inside text tags pre-rendering
- fix Python plugin quickparser.py to better handle svg mixed case tag names
- better handle cancelling out of plugins prior to their completion
- better handle Guide/Landmark title translations (thank you BeckyEbook)
- clean up cmake and build warnings
- fix crash on Windows when using woff/woff2 fonts
- Drop 12701c.patch because now in upstream.