Change the return type of metadata convenience iter functions to actual iterators instead of allocated collections
The iterator item type is set to be a reference instead of the actual SpotifyId since that is a bit more versatile. Especially if at some point in the Track ids would get replaced by non Copy types like actual Tracks. Something like that was done with Artists in #1018 . If this is not desired it will of course be changed
SpotifyId
since that is a bit more versatile. Especially if at some point in the Track ids would get replaced by non Copy types like actual Tracks. Something like that was done withArtists
in #1018 . If this is not desired it will of course be changed