- switch to the more performant zstd
- Update to version 21.12:
* add label for keyboard layout
* fix spelling and config group
* SD: Tweak text and spacing
* fix keyboard shortcuts on restart
* remove labels from ShortcutDialog
* mark keyboard translations
* update keyboard translations
* updates wiht multiselect and reset all
* correct french keyboard for shortcut translations
* add french keyboard for shortcut translations
* Improve plugin debug logging
* fix language problem for saving user shortcuts
* allow for different keyboard layouts. Bug fixes
* simplify ShortcutWarnDialog
* fix warning bug
* fix bug in addUserShortcut
* use name in shortcut editor if no text is provided
* catch escape key in ShortcutDelegate so esc can be set as a shortcut
* limit to single key press in ShortcutDelegate
* clean up ShortcutDialog
* initial ShortcutDialog version with in-place keysequnece editing
* enter does not accept ShortcutDisalog
* Locate Audio Files: Turn off wait cursor
* Implement missing audio file skip
* FLD: Add Skip button
* fix display bugs in matrix editor
* Shortcuts: Reduce debugging output
* Shortcuts: Update dialog message text