[gnome-music] (4 commits) Non-fast-forward update to branch wip/jfelder/playlists-core-rewrite-prep-work

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/playlists-core-rewrite-prep-work' was changed in a way that was not a fast-forward 
update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  5a90013... mpris: Use the playlists managed by Playlists
  e811ca7... playlists: Remove unused signals
  66afafb... playlists: reorder imports
  cb06a16... playlists: Update copyright header

Commits added to the branch:

  9de0026... mpris: Use the playlists managed by Playlists
  f7e8d60... playlists: Remove unused signals
  8190473... playlists: reorder imports
  1a5dc28... playlists: Update copyright header