Moved varboost delta-q adjusting code to happen before TPL, giving TPL the opportunity to work with more accurate superblock delta-q priors, and produce better final rdmult lambda values
Fixed rare cases of pulsing at high CRFs (>=40) and strengths (3-4)
2% avg. bitrate reduction for comparable image quality
Added an alternative boosting curve (--enable-alt-curve), with different variance/strength tradeoffs
Refactored boost code so it internally works with native q-step ratios
Removed legacy variance boosting method based on 64x64 values
--enable-alt-curve), with different variance/strength tradeoffs--new-variance-octile->--variance-octile