Log Message:
Update to 2.19.3

http://git.finalrewind.org/feh/plain/ChangeLog
Mon, 21 Aug 2017 19:04:00 +0200  Daniel Friesel <derf+feh@finalrewind.org>

* Release v2.19.3
    * Save geometry data in .fehbg when setting a wallpaper with --geometry
    * Fix Imlib2 developer warning and improve out-of-memory error message
      when using --thumbnails / --index on large directories