rap v0.2.1

Changes

• Changed exported .xspf and .m3u8 playlists to use relative paths.
• Fixed crashing when interacting with settings.
• Added arguments parsing when opening files through system's context menu.
• Some fixes in playback toggling system.
• Proper repositioning of dock widget.
• Corrected the behavior of disabled/playlist repeat modes.
• Fixed corrupted equalizer output.
• Added the option to add "Open in RAP" item to Windows Explorer context menus.