Ability to sort playlists by the date a tune was added to the playlist, primarily for collaborative playlists

Me and a friend is building a collaborative playlist but one thing we have found lacking is the ability to see what songs the other one has added. Therefore I would like to suggest a feature that lets you sort the playlist by the date the song was added to the playlist. So in short, add a sortable column with "added date" in the spotify playlist view.