--explicit-package-bases
`mypy EDMarketConnector.py` was throwing a warning: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] for some things. Bizarrely including e.g. play_bad: bool = False
* With mypy we need to set some options for sane output. * With pre-commit this defines the checks it performs.