Major changes in 43.2:
- Implement a gtksink video output fallback if native OpenGL support is
  not available.
- Fix a lot of thumbnailing failures caused by memory hungry video decoders
- Hide the rotate menu items if rotation is not supported
- Fix some AVI files not being associated correctly
- Fix widget focus when starting video playback
- Fix left-over files when streaming a video and the player is closed
- Fix window not being matched to the application under Wayland
- Stop using gnome-shell to flash the screenshot area, that stopped
  working a long time ago
- Stop thumbnailing m3u playlists
- Remove obsolete plugins (apple-trailers, vimeo)
- Fix a number of possible crashers
- Translation updates