[libdazzle] Created tag 3.28.4

[Christian Hergert <chergert src gnome org>]

The signed tag '3.28.4' was created.

Tagger: Christian Hergert <chergert redhat com>
Date: 1532631365 -0700

    release 3.28.4

Changes since the last tag '3.28.3':

Christian Hergert (7):
      bolding: release allocated list when filtering
      muxer: make sure we own a copy of keys
      menus: separate item extraction from destruction
      shortcuts: release return value GValue
      animation: handle 0 length animations gracefully
      shortcuts: cleanup more state on widget destruction
      release 3.28.4

Jan-Michael Brummer (1):
      application-window: Correct ref'ing of titlebar widget