Merge pull request #147 from nugget/dependabot/pip/mypy-0.701

Bump mypy from 0.620 to 0.701

Author: nugget

requirements_test.txt

@@ -6,7 +6,7 @@ flake8==3.7.7
 pydocstyle==3.0.0
 pylint==2.3.1
 mock-open==1.3.1
-mypy==0.620
+mypy==0.701
 asynctest==0.13.0
 pytest-aiohttp==0.3.0
 pytest-cov==2.5.1