* Upgrade pydocstyle to 4.0.0 and flake8-docstrings to 1.3.1
http://www.pydocstyle.org/en/4.0.0/release_notes.html#july-6th-2019
* Address pydocstyle D413's
* tox: do not run pydocstyle
Does not seem to add any value over flake8-docstrings (and would have
needed a D202 exclusion).
* Consolidate
* Fix tests
* Update imports
* Fix import
* Use importlib because integration and package share name
* Fix more tests
* Update .coveragerc and CODEOWNERS