plcont: Mention insert() and append() in docs
plcont: Mention insert() and append() in docs

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