[TODO] Add PyPy3.7 to the CI matrix

[webknjaz]

It's been released today: https://twitter.com/pypyproject/status/1309419644340625409.

I think it should be added once at least one CI brings it on board. I've posted a few requests on their forums: actions/setup-python#136 / https://travis-ci.community/t/add-pypy-7-3-2-support/10007?u=webknjaz.

[jaraco]

Sounds good. My preference is to focus on Github Actions, as they seem to have the most capability with the simplest design.

[abravalheri]

Hi @webknjaz, is the idea here to also add PyPy 3.8, or are we good with the current configuration?

[webknjaz]

Yep, add 3.8 too. This issue was filed before 3.8 even existed.

[webknjaz]

PyPy 3.10 is already in the CI.