Changes in 2.1.56

Release Candidate 1

Build bc697597 / 2023-01-04.

New features/improvements:

Cloze deletions can now be nested inside other cloze deletions (thanks to TRIAEIOU).
Inactive cloze deletions can now be styled with .cloze-inactive (thanks to TRIAEIOU).
Graphs in large collections now load approximately twice as quickly.
Add-on config help is now shown in a webview (thanks to Abdo).

Fixes:

Fix error popping up 12 hours after starting Anki on macOS and some Linux machines.
Fix unreadable text when searching in sidebar.
Fix fcitx not working on Linux Qt6 package.
Fix old graphs failing to appear.
Fix dark mode display issues on macOS/Qt5.
Fix images not being constrained to window width when image shrinking disabled.
Fix incorrect macOS minimum version in Qt5 build.
Fix lack of highlight for marked cards in day mode.
Fix pop-up menu in editor sometimes flashing (thanks to Hikaru).
Fix some issues entering text via IME around MathJax area (thanks to Hikaru).
Fix some regressions with the graphs when saving to a PDF.
Fix truncated text on some buttons.
Fix two mpv issues on Windows (thanks to Kelciour).
Tweak focus highlight of some widgets (thanks to Abdo).

For devs: