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

[Marinus Schraal <mschraal src gnome org>]

The branch 'wip/mschraal/toolbar-cleanup' 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:

  1f8911d... toolbar: Use GtkTemplate
  47b3fec... toolbar: Do not get toplevel window in init
  745096a... toolbar: Toolbar -> HeaderBar

Commits added to the branch:

  00c2e4f... toolbar: Use GtkTemplate
  3223716... toolbar: Do not get toplevel window in init
  0c56b0c... toolbar: Toolbar -> HeaderBar
  bc66954... headerbar: Split SelectionBarMenuButton out
  7caf747... selectionmenuui
  9ce483c... Rename selectionmenu -> SelectionBarMenuButton
  4278955... toolbar -> headerbar
  a9fe162... headerbar: Add items-selected prop