Update to mypy 0.730

We can't use specific type ignores yet as there is no pyflakes release with
this change in: https://github.com/PyCQA/pyflakes/pull/455

misc/requirements/requirements-mypy.txt

@@ -1,6 +1,6 @@
 # This file is automatically generated by scripts/dev/recompile_requirements.py
 
-mypy==0.720
+mypy==0.730
 mypy-extensions==0.4.1
 # PyQt5==5.11.3
 # PyQt5-sip==4.19.19

mypy.ini

@@ -22,6 +22,10 @@ warn_unreachable = True
 # Other strictness flags
 strict_equality = True
 
+# Output
+show_error_codes = True
+pretty = True
+
 [mypy-colorama]
 # https://github.com/tartley/colorama/issues/206
 ignore_missing_imports = True

tox.ini

@@ -193,7 +193,7 @@ commands = eslint --color --report-unused-disable-directives .
 
 [testenv:mypy]
 basepython = {env:PYTHON:python3}
-passenv =
+passenv = TERM
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/misc/requirements/requirements-dev.txt