Major changes in 3.12.2:
- Postpone loading library after playback
- Fix headerbar title when playing search results
- Fix crasher on startup with newer GTK+
- Fix crash when browsing Euronews source
- Don't allow adding duplicate items to recent view
- Fix loading Audio CDs' Wave files
- Fix potential data loss when removing multiple files
- Reset loaded text subtitles when closing video
- Fix hidden cursor with visible popup

OpenSubtitles:
- Don't throw an error when the language is unknown
- Fix subtitles suffix when saving it
- Add support for Basque