ref: 6f979f815bb9256aa4e71f493c71f70dd94ced2f
parent: 82cce09a19199b62fd67a9307b64fd96d7ede33b
author: Janne Grunau <janne-vlc@jannau.net>
date: Mon Nov 5 15:03:55 EST 2018
tile threading: pass decoding errors through progress tracking See #127