[gnome-music] (3 commits) Non-fast-forward update to branch wip/mschraal/type-checking

[Marinus Schraal <mschraal src gnome org>]

The branch 'wip/mschraal/type-checking' 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:

  08316a1... coresong: Add static typing
  d57f4f1... grltrackerwrapper: Cleanup timeout handling
  73b411f... grltrackerwrapper: Add static type checking

Commits added to the branch:

  3b53514... coresong: Add static typing
  394f452... grltrackerwrapper: Cleanup timeout handling
  fe24d96... grltrackerwrapper: Add static type checking