Franz

Bugged playlists: https://open.spotify.com/playlist/499E9KTm9avwUkLlD6cqRI https://open.spotify.com/playlist/1hTCnxm27ofzacxjn8P5wf  While ``.canAdd`` fixes this and is tested in my extension, I did not test it in yours, but I don't see a reason why it...