[gnome-music] (8 commits) Non-fast-forward update to branch wip/mschraal/artrework

[Marinus Schraal <mschraal src gnome org>]

The branch 'wip/mschraal/artrework' 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:

  e40413c... albumartcache: Full rewrite
  3d36090... albumartcache: Fix MPRIS thumbnail retrieval
  c36482d... albumartcache: Uppercase DefaultIcon.Type enum

Commits added to the branch:

  2efea25... playlistview: Correctly populate the sidebar (*)
  c42b294... flatpak: Access to host cache for media art (*)
  c4ffa8d... CI: Use latest stable Fedora image (*)
  3be42e0... mpris: Fix object path for track ids (*)
  d92687e... albumartcache: Full rewrite
  a7d84a1... albumartcache: Fix MPRIS thumbnail retrieval
  4072a5b... albumartcache: Uppercase DefaultIcon.Type enum
  872fba4... Add CoverStack for smooth art transitions

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