* implement search for shows/podcasts
* create Playable supertype for queue to contain tracks and episodes
* wip: implement playback of episodes
* load spotify id from uri instead of raw id to fix podcast playback
* show duration for podcast episodes
* implement generic status bar for playables (tracks and episodes)
omit saved indicator for now as the library does not yet support podcasts
* instead of only the last 50 fetch all episodes of a show
* refactor: extract Playable code to separate file
* implement playback/queuing of shows + sharing url
* implement podcast library
* migrate mpris code to Playable supertype
`is_followed_playlist()` only works within the library context. In the search
view it almost always evaluates to `true` as most playlists are owned by other
users.
fixes#213
* wip: add methods and api usage to delete track from playlist
* enh: add ability to remove track from playlist with immediate visual feedback
* minor cosmetic changes
Co-authored-by: Henrik Friedrichsen <henrik@affekt.org>
Starting a playlist, album or artist with shuffle enabled always
starts on the first track in it and then plays the rest of the
queue shuffled.
This changes it so unless a track is picked directly, playback
will start on a random track of the selection.
