Released on February 10, 2021.
- Dropped support for Python 2 and Pypy
- Declare this extension safe for parallel reading
- Migrate to Github Actions for CI
- Test against recent versions of Sphinx
- Format source code with Black
- Add documentation to the `sdist`
- Fixed unwanted `<blockquote>` tags in multi-line command descriptions that
are indented to match surrounding code.
See also `doc/changelog.rst`