3.9
bpo-36797: Prune more legacy distutils documentation (GH-13092)
bpo-41203: Replace Mac OS X and OS X with macOS (GH-28515) (GH-28524)
bpo-39586: Deprecate distutils bdist_msi command (GH-18415)
bpo-38914 Do not require email field in setup.py. (GH-17388)
bpo-36797: Reduce levels of indirection in outdated distutils docs (#13462)
[3.9] bpo-46044: Annotate deprecated sdists formats (GH-30043) (GH-30155)