Log Message:
py-zstandard: updated to 0.17.0

0.17.0 (released 2021-01-18)

Backwards Compatibility Notes

ZstdCompressionWriter and ZstdDecompressionWriter now implement __iter__() and \ 
__next__(). The methods always raise io.UnsupportedOperation. The added methods \ 
are part of the io.IOBase abstract base class / interface and help ensure \ 
instances look like other I/O types.
The HASHLOG3_MAX constant has been removed since it is no longer defined in zstd \ 
1.5.1.

Bug Fixes

The ZstdCompressionReader, ZstdCompressionWriter, ZstdDecompressionReader, and \ 
ZstdDecompressionWriter types in the C backend now tracks their closed attribute \ 
using the proper C type. Before, due to a mismatch between the C struct type and \ 
the type declared to Python, Python could read the wrong bits on platforms like \ 
s390x and incorrectly report the value of the closed attribute to Python.

Changes

Bundled zstd library upgraded from 1.5.0 to 1.5.1.
The C backend now exposes the symbols ZstdCompressionReader, \ 
ZstdCompressionWriter, ZstdDecompressionReader, and ZstdDecompressionWriter. \ 
This should match the behavior of the CFFI backend.
ZstdCompressionWriter and ZstdDecompressionWriter now implement __iter__ and \ 
__next__, which always raise io.UnsupportedOperation.
Documentation on thread safety has been updated to note that derived objects \ 
like ZstdCompressionWriter have the same thread unsafety as the contexts they \ 
were derived from.