Add recommended tracks to queue

[davidem]

I wanted to implement the 'radio' feature of Spotify, but unfortunately there's no API for that. The closest thing available is "get recommended songs by seed", where the seed can be a mixture of 5 tracks, artists and/or genres.

I just wanted to let you know I've implemented this in my 3.0 version, PR #144. Using "spotify match " it adds 10 'recommended songs' to the queue and only works if spotify is not paused. Spotify will return errors when paused, saying it can't find a playable device. I'll see if I can work around that...

Cheers,

David