- [x] pre-commit hook - [x] CI job - [x] Configuration: - [x] [Can the configuration be stored into `pyproject.toml`](https://github.com/PyCQA/flake8/issues/234)? Not yet it seems. - [x] Open follow-up ticket to handle complexity: #427 - [x] Apply changes - [x] line length. Find compromise with `black`’s line length: 100 lines, 80 lines for black