[gnome-music] (17 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:

  d4c6c8a... mpris: Fix codestyle on the DBusInterface class
  f3f1d1e... mpris: Rename MediaPlayer2Service class to MPRIS
  7776325... mpris: Fix xml description indentation
  be2e906... mpris: Make docstring quotation mark consistent
  c988622... mpris: Add PropertiesChanged signal to xml description
  5575711... mpris: Simplify query playlists logic
  183f288... mpris: Cleanup SetPosition method
  3f1214f... mpris: Remove unused signals from the TrackList interface
  de06382... mpris: Change naming convention to snake_case
  8563bdf... mpris: Move dbus connection logic to DBusInterface
  73071eb... mpris: Handle signals emissions internally
  743ce01... mpris: Make app attribute internal
  a809e3a... mpris: Make player attribute internal
  ac9a022... mpris: Add doctring for all MPRIS methods
  383e9bb... mpris: Fix some PEP-8 issues
  03da72e... CI: Remove mpris.py from flake8 ignored files
  16e455c... mpris: Update copyright information

Commits added to the branch:

  b4cc117... mpris: Fix codestyle on the DBusInterface class
  1683b2b... mpris: Rename MediaPlayer2Service class to MPRIS
  dcf1f57... mpris: Fix xml description indentation
  9f5de4d... mpris: Make docstring quotation mark consistent
  eeb32c3... mpris: Add PropertiesChanged signal to xml description
  ff1925a... mpris: Simplify query playlists logic
  fa47012... mpris: Cleanup SetPosition method
  fdc7598... mpris: Remove unused signals from the TrackList interface
  79a12ff... mpris: Change naming convention to snake_case
  7da0020... mpris: Move dbus connection logic to DBusInterface
  79135d8... mpris: Handle signals emissions internally
  4a4cb10... mpris: Make app attribute internal
  4d50a14... mpris: Make player attribute internal
  3410706... mpris: Add doctring for all MPRIS methods
  f08d3b6... mpris: Fix some PEP-8 issues
  30c5694... CI: Remove mpris.py from flake8 ignored files
  4d803ac... mpris: Update copyright information