In the Twisted trunk branch, I have reduced the number of errors reported
by mypy to *zero!*
You verify this by running:
*tox -e mypy*
In addition, I have worked with Adi to enable CI for Twisted checkins so
that mypy is
run for each pull request. Adi configured the GitHub repo to *require*
mypy to pass in order for a Twisted pull request to be merged.
Thanks to Adi, Wilfredo, Tom, and Maarten for helping with various
mypy-related code reviews!