- update to 1.5.5.1:
* Update bindled libzstd to 1.5.5
* Fix decompression of multiple concatenated frames in one
input string
* Generic automated builds are pushed to PyPi.
* `x86` and `x64` builded under Ubuntu 16.04. And with sse+sse2
optimizations enabled via compiler.
* `armhf` and `arm64` builded under Ubuntu 18.04.
* `armhf` builded on Raspberry PI 2B and optimized for it.
* `arm64` builded on Raspberry PI 4B and optimized for it.
* PyPy builds on `arm64` missing `2.7` as it are broken.
* MacOsX builds done inside 11.7 hackintosh
* Don't fail with exception if defined number of threads to
compress is bigger than libzstd can take.
* Silently drop it value down to max threads.