[gnome-music] (10 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:

  d7a20dc... playlists: Sort playlists
  cd2e70a... playlistdialog: Use the playlists managed by Playlists
  6f28e51... playlists: Introduce a ready property
  fad5b52... playlistsview: Move playlists instantiation in the class
  ac9eb97... playlistsview: Use the playlists managed by Playlists
  df13afc... playlists: Remove is_smart_playlist method
  2b13d22... mpris: Use the playlists managed by Playlists
  ac854ca... playlists: Remove unused signals
  eb3c114... playlists: reorder imports
  a32b33d... playlists: Update copyright header

Commits added to the branch:

  a1947ff... playlists: Sort playlists
  fc5fb58... playlistdialog: Use the playlists managed by Playlists
  e02106c... playlists: Introduce a ready property
  887f30f... playlistsview: Move playlists instantiation in the class
  3a27c27... playlistsview: Use the playlists managed by Playlists
  e36d61b... playlists: Remove is_smart_playlist method
  5a90013... mpris: Use the playlists managed by Playlists
  e811ca7... playlists: Remove unused signals
  66afafb... playlists: reorder imports
  cb06a16... playlists: Update copyright header