[gnome-music] (24 commits) Non-fast-forward update to branch wip/jfelder/mpris-cleanup

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/mpris-cleanup' 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:

  b50890f... mpris: Make the trackid truly unique
  e7a0a76... player: Remove volume logic
  4467ead... mpris: Distinguish mpris playlists from user playlists
  2f5e3e3... mpris: Simplify GetPlaylists method
  fb5e3f2... mpris: Group MPRIS playlist creation logic into one method
  ae82609... mpris: Send a notification when a playlist is renamed
  d907e2c... mpris: Do not send PlaybackStatus property if unchanged
  7ca8b8c... mpris: Remove useless position reset on song change
  40f670e... mpris: Do not expose a Seeked method
  f2dc5cf... mpris: Synchronize metadata emission on song change
  2cd4e8f... mpris: Do not send a signal for unchanged properties
  f86bc15... mpris: Remove unused signals from the TrackList interface
  4a92b66... mpris: Do not expose a TrackListReplaced method
  a5fff6e... mpris: Change naming convention to snake_case
  c0cb610... mpris: Move dbus connection logic to DBusInterface
  44372c7... mpris: Handle signals emissions internally
  d8b365c... mpris: Make playlists attribute internal
  ca0b50a... mpris: Make app attribute internal
  7d94f47... mpris: Make player attribute internal
  03a5170... mpris: Make player_toolbar attribute internal
  f82c3fc... mpris: Add doctring for all MPRIS methods
  dabdfc2... mpris: Fix some PEP-8 issues
  5ec1173... CI: Remove mpris.py from flake8 ignored files
  f7d0318... mpris: Update copyright information

Commits added to the branch:

  9e3ccd9... mpris: Make the trackid truly unique
  719b972... player: Remove volume logic
  0e19c08... mpris: Distinguish mpris playlists from user playlists
  38f8612... mpris: Simplify GetPlaylists method
  d925304... mpris: Group MPRIS playlist creation logic into one method
  93638c1... mpris: Send a notification when a playlist is renamed
  a90759b... mpris: Do not send PlaybackStatus property if unchanged
  65c3504... mpris: Remove useless position reset on song change
  a3f177c... mpris: Do not expose a Seeked method
  8a80fe7... mpris: Synchronize metadata emission on song change
  8608c0f... mpris: Do not send a signal for unchanged properties
  ab999d2... mpris: Remove unused signals from the TrackList interface
  c67b096... mpris: Do not expose a TrackListReplaced method
  d9bd3e7... mpris: Change naming convention to snake_case
  04a73ae... mpris: Move dbus connection logic to DBusInterface
  c6b2af1... mpris: Handle signals emissions internally
  5f7f8fe... mpris: Make playlists attribute internal
  ce08fb1... mpris: Make app attribute internal
  fdfc7d4... mpris: Make player attribute internal
  15a8ddd... mpris: Make player_toolbar attribute internal
  8714693... mpris: Add doctring for all MPRIS methods
  37a2d5a... mpris: Fix some PEP-8 issues
  35fa77f... CI: Remove mpris.py from flake8 ignored files
  9436aa2... mpris: Update copyright information