version 3.15.4
  - Ignore intermediate file with Automake 1.15
  - Removed obsolete variables in autogen.sh
  - um-crop-area: Fix deprecated API usage
    https://bugzilla.gnome.org/show_bug.cgi?id=742530
  - um-crop-area: Enforce a minimum size
    Otherwise, if callers aren't careful, users could resize us so small
    that we'd crash inside gdk_pixbuf_scale() .
    https://bugzilla.gnome.org/show_bug.cgi?id=742530
  - um-crop-area: Fix background rendering around the picture
    Instead of trying to fill the displayed pixbuf with the background
    color (and failing at that), just make the pixbuf be an aspect correct
    scaled size of the original picture and draw it at the correct offset
    on the draw vfunc.
    This allows us to get rid of deprecated gtk+ API usage and fixes the
    background around the picture ending up black despite de code's
    intent.
    https://bugzilla.gnome.org/show_bug.cgi?id=742530