v2.2.0
- Level 4 was too slow and has been replaced: Level 1 to 3 have been promoted and a new Level 1 with no entropy codec has been added
- Rewritten Huffman codec (30% faster)
- Improved LZ codec (better compression)
- Faster UTF transform (>25% faster)
- Many other performance improvements (ANS, ROLZ, CM, ...)
- Bug fixes