One of the new features introduced alongside Apple Music and the iCloud Music Library in the latest versions of iTunes and iOS is the ability to now specify an image of your choice to represent any of your playlists. By default, iTunes and iOS will simply use a collage of the album artwork from the tracks in your playlist, but you can actually add any photo you want instead. In iOS 8.4, this is done by opening the playlist, tapping the “Edit”…