Prepare for 0.12.1 release

Oops update to pypa/[email protected]

Merge pull request pytoolz#537 from eriknw/auto_pypi

Tag glob pattern for auto-upload to PyPI

Merge pull request pytoolz#525 from eriknw/update_python_versions

Update supported Python versions in setup.py

Merge pull request pytoolz#501 from eriknw/no_compatibility

Don't use compatibility module internally (it warns)

Merge pull request pytoolz#499 from eriknw/versioneer

Use versioneer to maintain version.

Bump version to 0.10.0

Version 0.9.0

Version 0.8.2