Create mypy config file

mypy.ini

@@ -0,0 +1,10 @@
+[mypy]
+python_version=3.6
+follow_imports=normal
+ignore_missing_imports=True
+disallow_untyped_calls=True
+warn_return_any=True
+strict_optional=True
+warn_no_return=True
+warn_redundant_casts=True
+warn_unused_ignores=True