Swift interface for the commands defined in the Spotify app's scripting definition file
SpotifyController.setRepeating(true)
SpotifyController.setShuffling(false)
SpotifyController.nextTrack()
SpotifyController.previousTrack()
SpotifyController.pause()
SpotifyController.play()
SpotifyController.play("spotify:album:4BnNSzOWadogStvyYshJIo")