Move Mac and manylinux builds to GitHub Actions

[jamadden]

As with zopefoundation/zope.interface#225, since Travis CI no longer works this is probably a blocker for any other PRs.

Because of the C extensions this doesn't quite fit our standard model.

I have some github actions YAML from other repos that deal with C extensions and building/uploading Mac/Linux[32-bit, 64-bit, aarch64] wheels that I can bring over as a starting point.

Someone with access to the zope.wheelbuilder account would need to add a repository secret for TWINE_PASSWORD (a token with scoped upload rights to zope.interfacepersistent). (I could create a PyPI token from my personal account, but since we have a dedicated account I'd prefer not to.)

• Environment that builds docs
• 32-bit linux build/upload
• 64-bit linux build/upload
• aarch64 linux build/upload
• coveralls
• mac builds/upload
• Pure-python tests
• Compare other settings with existing "pure-python" configurations
• Update badges
• Update any docs references

[mgedmin]

Someone with access to the zope.wheelbuilder account would need to add a repository secret for TWINE_PASSWORD (a token with scoped upload rights to zope.interface). (I could create a PyPI token from my personal account, but since we have a dedicated account I'd prefer not to.)

Heh, s/zope.interface/persistent/, but this is now done.

[jamadden]

Thank you! PR #159 should now be ready to go.

[jamadden]

Closed by #159