Very nice :)
Hi. I tried it with pypy 5.10.0 from homebrew mac, and got this error.
However, because 5.10.0 has quite a few errors in CPython API extension support it's ok to require pypy 6.0+ If you agree, let's merge this in? (also added supported pypy version to README).
pypy - 1 failure, 8 errors in the rect module.
On pypy3 6.0.0 mac homebrew I get this:
I skipped pixelarray_test:PixelArrayTypeTest.test_contains and the test suite runs with the tests again same as pypy (failures=1, errors=8).