[gnome-music] (15 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:

  3c44d62... albumartcache: Rewrite
  fa3336a... albumartcache: Higher priority for I/O processes
  11e43d4... albumartcache: Uppercase DefaultIcon.Type enum
  6ee08bb... Add CoverStack for smooth art transitions
  8bc417b... player: Fix MPRIS2 coverart update
  d6d3767... albumartcache: Optimize frame rendering

Commits added to the branch:

  bebda57... scrobbler: Correctly supply album title (*)
  e378c25... playlistview: Refactor pl_todelete to a dict (*)
  fa45c2f... playlistview: Simplify playlist deletion (*)
  a89da7b... window: Move away some playlist notification logic (*)
  3faeca1... window: Rename playlist variable to avoid confusion (*)
  25dfb0d... notificationspopup: Create NotificationsPopup (*)
  ed79c18... playlistview: Undo song removal from playlist (*)
  50392ad... notificationspopup: Delete pending notifications when closi (*)
  099d3aa... scrobbler: Fix the call to get the album title (*)
  47aa076... albumartcache: Rewrite
  b3d2664... albumartcache: Higher priority for I/O processes
  cc3135c... albumartcache: Uppercase DefaultIcon.Type enum
  0cd7131... Add CoverStack for smooth art transitions
  942864d... player: Fix MPRIS2 coverart update
  796ed59... albumartcache: Optimize frame rendering

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