* Release checklist

- Version number in __init__.py
- Classifiers in pyproject.toml
    https://pypi.python.org/pypi?%3Aaction=list_classifiers
    eg:
      Development Status :: 3 - Alpha
      Development Status :: 5 - Production/Stable
- Copyright date in NOTICE.txt
- Update README.rst with latest changes
- Kits:
    $ make clean dist
    $ make test_pypi
    $ make pypi
    $ make tag
    $ make ghrelease
