21.2
Move manylinux logic into private module (#438)
PEP 656 musllinux support (#411)
Drop support for python 2.7, 3.4, and 3.5 (#376)
Update manylinux detection to be robust to incompatible ABIs (#221)
Fix some spelling mistakes (#436)
Correctly remove prerelease suffixes from ~= check (#366)
make tags._platform_tags public (#446)
Add support to .utils.parse_sdist_filename() for sdists with .zip extension (#428)