added convenience methods: get_sonos_favorites, get_favorite_radio_stations, get_favorite_radio_shows
added convenience methods: get_sonos_favorites, get_favorite_radio_stations, get_favorite_radio_shows

SoCo/SoCo,KennethNielsen/SoCo,KennethNielsen/SoCo,SoCo/SoCo,dajobe/SoCo,dajobe/SoCo,petteraas/SoCo,petteraas/SoCo,petteraas/SoCo