[skip actions] Update code coverage snapshot

Add 'all' optional dependency target and tweak pyproject.toml

Make git diff check more concise

Move setup.py configs to pyproject.toml

Fix flake8 min python version

Move flake8 config to pyproject.toml and replace pytest-watch with py…

…test-watcher

Clean up style of .pre-commit-config.yaml

Fix spelling of spamburglar