> The reason why I prefer the current API over my support.expected_module_api() idea is it requires the extra assertCountEqual() boilerplate at each call site.

I personally find explicit assert* calls in a test case more readable(e.g. I don't need to check what the helper does every N month), but I guess that's another version of tabs vs. space debate :)

> Jacek’s three patches look ready to me. I propose:

Your plan sounds good to me. Thanks!

> Should we add anything into What’s New, maybe warning of new symbols from “import *”?

I guess it wouldn't hurt to add a sentence :)