- Update to version 1.4.2
* AVX2 optimizations for 8-tap and new variants for 6-tap
* AVX-512 optimizations for 8-tap and new variants for 6-tap
* Improve entropy decoding on ARM64
* New ARM64 optimizations for convolutions based on DotProd
extension
* New ARM64 optimizations for convolutions based on i8mm
extension
* New ARM64 optimizations for subpel and prep filters for i8mm
* Misc improvements on existing ARM64 optimizations, notably
for put/prep
* New PowerPC9 optimizations for loopfilter
* Support for macOS kperf API for benchmarking