[gnome-music] (5 commits) Non-fast-forward update to branch wip/mschraal/playlists-fixes

[Marinus Schraal <mschraal src gnome org>]

The branch 'wip/mschraal/playlists-fixes' 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:

  29405ee... grltrackerplaylists: Bind playlists songs to main coresong
  aef8dd9... grltrackerplaylists: Resort Most Played
  89605f8... coremodel: Unify player model property binding

Commits added to the branch:

  cd667d7... coremodel: Bind player model state bidirectional
  3dc4d4e... grltrackerplaylists: Bind playlist songs to main coresong
  33832a4... grltrackerplaylists: Resort Most Played
  9f16095... coremodel: Unify player model property binding
  66b3505... coremodel: Bind playlist validation property one way