Release v3.0.2 (evhub#758)

Fix py37 tests

Merge pull request evhub#735 from evhub/develop

Fix extras test

Merge pull request evhub#683 from evhub/develop

Clean up reqs

Merge branch 'master' into develop

More docs changes

Merge pull request evhub#565 from evhub/develop

Set version to 1.4.3