Release Checklist

• Verify toyplot.__version__ is set to the correct release version number in toyplot/__init__.py, using semantic versioning.
• Update docs/release-notes.rst.
• Update docs/features.rst.
• Run python docs/setup.py clean followed by python docs/setup.py to ensure all notebook-based documentation is up-to-date.
• Update the classifiers and description in setup.py.
• Commit the release changes with commit message "Toyplot version X.Y.Z".
• Push the release commit.
• Tag the release commit with git tag -a vX.Y.Z -m "Toyplot version X.Y.Z release."
• Push the release tag with git push origin vX.Y.Z
• Add release notes in github.
• Build the new source release: $ python setup.py sdist
• Upload the newly created toyplot.egg-info/PKG_INFO to PyPI as metadata.
• Upload the new dist/toyplot-X.Y.Z.tar.gz to PyPI.
• Bump toyplot.__version__ to a new version number.