Implemented Notification support using notify-send as opposed to libnotify. This is because notify_notification_send does a synchronous dbus call to org.freedesktop.Notification and typically results in DBus timeouts. In the near future we will rewrite this to just use our own proxy and do an async send.
Refactored our GVariant metadata generation for a KotoIndexedTrack into a dedicated koto_indexed_track_get_metadata_vardict function. This can then be used across our playback engine and MPRIS.
Implement functionality for gracefully showing the play button on top of KotoAlbumArt images. Implemented a new koto_indexed_album_set_as_current_playlist function for setting an album as the current playlist, useful when clicking to play an album via its artwork.
Implement reading of artists, albums, and tracks. Fixed a bug related to unnecessary file name parsing. Fix SIGSEGV related to file name parsing and koto_utils_get_filename_without_extension.
Implemented an unquote string function for use when reading database entries. Try to fix some weird random rendering issues. Changed where we are doing some KotoPageMusicLocal widget construction.
