Noticed few bugs

[NovusTheory]

I'm working with the WebSocket Playback API for GPMPD and noticed a few issues specifically coming from this library.

• Inability to fetch all playlists unless they have been interacted with (e.g. play a song from them). It would be great if there was some way this could be resolved as I depend upon being able to fetch playlists even if they weren't interacted with. Bonus points would be the ability to fetch the automatically generated playlists too for example Last Added.
• library.playTrack times out loading the album. Consistent results that I can't seem to find the reason why as it has the view loaded on GPMPD well before the error is thrown back to me. Slight feedback but shouldn't this navigate to #/all and not the designated album as this is in fact from the songs library or rather a way to hint that this song is from the users Songs page rather than navigating to the tracks album.