Use ruff for CI quality
Use `ruff` for CI quality: 10-100x faster than existing linters (like Flake8) and formatters (like Black).

Note this is most useful when developing: `make style` now is much faster and additionally runs the linter (before `flake8` was only called by `make quality`).
Use ruff for CI quality: Use `ruff` for CI quality: 10-100x faster than existing linters (like Flake8) and formatters (like Black).

Note this is most useful when developing: `make style` now is much faster and additionally runs the linter (before `flake8` was only called by `make quality`).