[gnome-music] (10 commits) Non-fast-forward update to branch wip/jfelder/mpris-gsconnect-debug

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/mpris-gsconnect-debug' 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:

  7e39cf5... mpris: Handle clients which request the volume property

Commits added to the branch:

  e6377de... starhandlerwidget: Catch the correct error in on_star_toggl (*)
  5db215e... albumartcache: Remove unused attribute (*)
  9ba2d6b... mpris: Untangle MPRIS and playertoolbar (*)
  461a9e1... mpris: Fix interface name in _on_playlist_renamed (*)
  92e1c02... mpris: Do not send the Tracklist when the playlist changes (*)
  b495763... mpris: Do not send a signal for unchanged properties (*)
  4804e73... player: Do not send the position with seek-finished signal (*)
  2fa4b63... player: Fix signal emission after a seek operation (*)
  058c694... Update Greek translation (*)
  24be914... mpris: Handle clients which request the volume property

(*) This commit already existed in another branch; no separate mail sent