0.40.0
Added mention of `wheel tags` to the manpage
Added tags CLI interface (#422)
sphinx documentation
Build the man page with Sphinx (#441)
Remove Python < 3.6 skips and master branch references (#435)
Updated link to now-decommissioned mailing list (#356)
Removed mentions of old Python versions in the installation docs
Created a new release
Recommend build instead of invoking setup.py directly (#439)
Added more pre-commit checks and a tox job for it (#434)