v0.3.0

Summary

The biggest addition is soundfile support for reading "wav", "ogg", "flac", and "aiff" files. Otherwise, cleaning up docs, bumping minimum version, etc.

Changelog

• Moved AliasedFactory and alias_factory_subclass_from_arg to alias submodule.
• Removed Python 3.6 support.
• Bug fix for issue #14 - Gammatone alpha coefficient wrong for ERB.
• Added Stack to post.
• Added soundfile decoding to read_signal.
• Removed catch-all condition for read_signal (when all else fails, try Kaldi and then numpy.fromfile). Breaks v0.2.0 behaviour. Needed for soundfile.
• Default for sphere decoding of u-law/a-law is now to convert to pcm-16 rather than to stay encoded.
• Removed setup.py (builds with pyproject.toml and setup.cfg).
• Removed conda recipe in prep for conda-forge.
• version.py -> _version.py
• Cleaned up documentation.