Test with mypy-0.790

Author: dmtucker

tox.ini

@@ -127,6 +127,7 @@ deps =
     mypy0.76: mypy >= 0.760, < 0.770
     mypy0.77: mypy >= 0.770, < 0.780
     mypy0.78: mypy >= 0.780, < 0.790
+    mypy0.79: mypy >= 0.790, < 0.800
     mypy0.7x: mypy >= 0.700, < 0.800
 
 commands = py.test -p no:mypy --cov pytest_mypy --cov-fail-under 100 --cov-report term-missing {posargs:-n auto} tests
@@ -144,7 +145,7 @@ commands =
 deps =
     bandit ~= 1.6.2
     flake8 ~= 3.8.3
-    mypy >= 0.780, < 0.790
+    mypy >= 0.790, < 0.800
 commands =
     bandit --recursive src
     flake8 setup.py src tests