docs: Release v2.0.0b3
docs: Release v2.0.0b3

kotamat/pyspotify,felix1m/pyspotify,jodal/pyspotify,felix1m/pyspotify,mopidy/pyspotify,kotamat/pyspotify,kotamat/pyspotify,jodal/pyspotify,jodal/pyspotify,felix1m/pyspotify,mopidy/pyspotify