Features:
- speed 0 is now up to 3x faster with no quality loss due to new early-exit implementation
- support for writing keyframe locations to a file for chunked encoders
- initial threading support (motion estimation only)
- tweaked quantizer modulation for better quality
- one-pass rate control
- 10% faster at speeds 3 and above due to addition of diamond me
- preparations for fast 8-bit mode
Fixes:
- bugfixes for HDR and colorspace obus (#977)