ENH: Release wheels

[pllim]

Given it has C-extension, wheels probably should be done on release.

Should also update wiki when this happens.

Might need to replace existing PyPI publishing workflow with https://packaging.python.org/guides/publishing-package-distribution-releases-using-github-actions-ci-cd-workflows/ or use Azure like astropy? Probably should try it on PyPI test instance first.

Might depend on pypa/gh-action-pypi-publish#29 .

Tom R said oldest-supported-numpy in pyproject.toml should help build the wheels with the oldest supported numpy for a given Python version.

Examples:

• https://github.com/ansible/pylibssh/blob/devel/.github/workflows/build-test-n-publish.yml
• https://cibuildwheel.readthedocs.io/en/stable/setup/