[gnome-music] (19 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:

  e4182d8... playlists: Manage playlists deletion list internally
  5aad022... playlists: Make Playlist a GObject subclass
  e8131e4... playlists: Add missing __repr__ method to Playlist class
  ba5bf8c... playlists: Turn python-specific fields into GObject propert
  2bf1f86... playlists: Dynamically instantiate the smart playlists
  3d84fc1... playlists: Add is_smart property to Playlist
  aa862a5... playlists: Add a SmartPlaylist class
  79def30... playlists: Manage playlists internally
  c26230a... playlists: Sort playlists
  3fc68c5... playlistdialog: Use the playlists managed by Playlists
  bbf1d83... playlists: Introduce a ready property
  13d510b... playlistsview: Move playlists instantiation in the class
  f1049ac... playlistsview: Use the playlists managed by Playlists
  a2db2ec... playlists: Remove is_smart_playlist method
  bacc7cf... mpris: Use the playlists managed by Playlists
  d3e6f39... grilo: Remove unused function populate_playlists
  a2085f7... playlists: Remove unused signals
  5b404cc... playlists: reorder imports
  64e55f4... playlists: Update copyright header

Commits added to the branch:

  44a0b02... playlists: Manage playlists deletion list internally
  a611a28... playlists: Make Playlist a GObject subclass
  2b68ebc... playlists: Add missing __repr__ method to Playlist class
  62c472f... playlists: Turn python-specific fields into GObject propert
  76cf0a5... playlists: Dynamically instantiate the smart playlists
  b4b2583... playlists: Add is_smart property to Playlist
  f7678e4... playlists: Add a SmartPlaylist class
  2660685... playlists: Manage playlists internally
  7f4521b... playlists: Sort playlists
  861b456... playlistdialog: Use the playlists managed by Playlists
  25813f2... playlists: Introduce a ready property
  44cd746... playlistsview: Move playlists instantiation in the class
  b543959... playlistsview: Use the playlists managed by Playlists
  ea372d6... playlists: Remove is_smart_playlist method
  fd7c5b8... mpris: Use the playlists managed by Playlists
  8353079... grilo: Remove unused function populate_playlists
  74fbf7d... playlists: Remove unused signals
  e98f962... playlists: reorder imports
  24afebb... playlists: Update copyright header