• PEP 656: musllinux support (:issue:411)
• Drop support for Python 2.7, Python 3.4 and Python 3.5.
• Replace distutils usage with sysconfig (:issue:396)
• Add support for zip files in parse_sdist_filename (:issue:429)
• Use cached _hash attribute to short-circuit tag equality comparisons (:issue:417)
• Specify the default value for the specifier argument to SpecifierSet (:issue:437)
• Proper keyword-only "warn" argument in packaging.tags (:issue:403)
• Correctly remove prerelease suffixes from ~= check (:issue:366)
• Fix type hints for Version.post and Version.dev (:issue:393)
• Use typing alias UnparsedVersion (:issue:398)
• Improve type inference for packaging.specifiers.filter() (:issue:430)
• Tighten the return type of canonicalize_version() (:issue:402)