lz4 0.21.1

Polishing towards 1.0

on Python PyPI

This release:

• Improves test coverage to the level planned for version 1.0
• Improves documentation and docstrings
• Adds a LZ4FrameCompressor.flush() method
• Fixes a couple of bugs with LZ4FrameDecompressor behaviour with respect to handling data after the end of a frame marker
• Adds a LZ4FrameDecompressor.reset() method

With this release we're entering feature freeze for 1.0 release. Documentation updates and bug fixes are the only expected changes.