New features:
- YouTube support - drag and drop videos from youtube or use open URI dialog to play them
- Added convenient ways of opening external subtitles:
- select and open both video+subs from file chooser/manager
- drop subtitles file on player window
- open subtitles from file chooser/manager while video plays to add them
- send their file path/uri to player via WebSocket message
Changes:
- Few GUI layout improvements
- Simplified video sink code
- Fixed missing Ctrl+O common keybinding
- Fixed error when playback finishes during controls reveal animation
- Fixed startup window size on Xorg
- Fixed top time not showing up on fullscreen startup
- Fixed missing file extensions in online URIs
- Fixed some error messages not being displayed