[gnome-music] (28 commits) Non-fast-forward update to branch wip/mschraal/template-trackwidget

[Marinus Schraal <mschraal src gnome org>]

The branch 'wip/mschraal/template-trackwidget' 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:

  e50ae41... songwidget: Add as template class

Commits added to the branch:

  33538bc... songwidget: start
  d3fa593... fix selection mode
  088b174... Make state work for albumsview
  1bdef14... make state work for artistalbumswidget as well
  72de43a... replace calls with properties
  0260141... albumwidget: Fix toggle on activation when in selection mod
  b277e7d... songwidget: add selection-changed signal
  ed7a425... songwidget: Add starring (favorites)
  f497ba5... disclistboxwidget: StarImage cleanup
  ad6ad6a... StarWidget: make favorite into a property
  2623e30... remove unused functions
  92e6f20... cleanup old songwidget stuff
  12fc166... songwidget: Add copyright header
  cc097a7... StarImage: property -> Property
  97f0944... more cleanup
  3886891... disclistboxwidget: Remove unused imports
  32c1f54... disclistbox: Remove all mention of playlists
  26f3cad... starimage: Make hover into a prop
  e53534b... rename TrackWidget -> SongWidget
  9b45752... songwidget: Remove Grl dep
  1e815aa... redo property names x-visible -> show-x
  a5f356a... flake8
  7065eb3... move starimage to widgets
  f428898... remove unused can_be_played var
  cce053c... disclistbox: simplify prop usage
  d93825d... songwidget: simplify selected property
  336d58f... songwidget: Add some docstrings
  db9641e... disclistboxwidget: Whitespace