RFC: pre-commit hooks for QA tasks

[l0b0]

Would you be interested in some simple configuration to automatically run flake8, yapf, mypy etc. when committing files? I've already set up pre-commit in another few projects, and it's super helpful:

• No need to manually run standard QA commands before checking in.
• Checks only the files you're committing at that point, so it's fast.
• Can tie straight into the binaries installed from requirements-dev.txt.
• Can also be run in the CI pipeline, making for a simpler CI script which just runs pre-commit run --all-files to run all the checks.
• Runs all the checks even if some of them fail and then reports the exit code, so you'd get more information than the current build script.

[vincentsarago]

is this the same issue as #390 @l0b0 ?

[l0b0]

Err, yes. 😊 Didn't realise I'd already created this, but somehow the other issue got more attention. Feel free to close either of them.

[duckontheweb]

Duplicate of #390