• Add Python 3.10 support (#87)
• Use pytest 6.2.5 or later for running tests on Python 3.10 (#87)
• Show deprecation warning when old-style PyPy configuration is used. See the pull request description for more details. (#82)
• Improve documentation (#83, #84, #85)
• Use of build when packaging this library (#73)
• Add Python 3.9 as a target version of black (#76)