Log Message:
py-test-cov: updated to 2.11.1

2.11.1 (2021-01-20)
-------------------
* Fixed support for newer setuptools (v42+).

2.11.0 (2021-01-18)
-------------------
* Bumped minimum coverage requirement to 5.2.1. This prevents reporting issues.
* Improved sample projects (from the `examples \ 
<https://github.com/pytest-dev/pytest-cov/tree/master/examples>`_
  directory) to support running `tox -e pyXY`. Now the example configures a \ 
suffixed coverage data file,
  and that makes the cleanup environment unnecessary.
* Removed the empty `console_scripts` entrypoint that confused some Gentoo build \ 
script.
  I didn't ask why it was so broken cause I didn't want to ruin my day.
* Fixed the missing `coverage context \ 
<https://coverage.readthedocs.io/en/stable/contexts.html>`_
  when using subprocesses.
* Updated the config section in the docs.
* Migrated CI to travis-ci.com (from .org).