2.0 works for me.
8 and 10 bit look alike (10 bit is a tiny bit more darker) but 16 bit is changing the picture somehow.
and the most important bug in this version is that it used always nearest neighbor as downscaler:
http://abload.de/img/downscalingifdgs.png
and something is going totally wrong too it can't show black in 1-Black Clipping.mp4
8 bit
http://abload.de/img/8bit7eisg.png
10 bit
http://abload.de/img/10bita0fn8.png
16 bit
http://abload.de/img/16bitmgi4j.png