[gnome-shell] (2 commits) Non-fast-forward update to branch wip/nielsdg/g-object-notify

[Niels De Graef <nielsdg src gnome org>]

The branch 'wip/nielsdg/g-object-notify' 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:

  d10df8b... st-button: Use g_object_notify_by_pspec()
  ad60183... st-icon: Use g_object_notify_by_pspec()

Commits added to the branch:

  6beb7d5... st-button: Use g_object_notify_by_pspec()
  5d03ae4... st-icon: Use g_object_notify_by_pspec()