New Features:
- Moved most of the themes into a separate package that can be downloaded from the update screen.
- Update: add download for themes.
- Update: add repair option for themes and for the main program.
- Update: make friendlier and better error messages.
- Replace spinbox with localized, scalable version.
- Revert all systems to use the native checkbuttons by default.
- Options: Added an option to use scaled widgets (radiobutton, checkbutton).
- Special Keys: Fix shift/iso_next_group issue on Linux.
- Options: Fixed incorrect cursor on the scrollable screens.
- Update: recoded so it will download faster.
- Translations: Fixed multi-line messages.
- Better locale handling (new locale command).
- Code clean-up.
- C code clean-up.
- Added internal sha512 routine.
- Update mutagen to version 1.41.1.