2nd attempt at ruff

[ajfriend]

Cherry-picking from #416:

• don't use ruff formatter
• use ruff linter with --fix option

I'm commenting out some ruff rules that look nice, but would make many changes. I'll add those in one at a time in future PRs.

[github-actions]

Coverage after merging having_a_ruff_day into master will be

99.44%

Coverage Report for Changed Files

File	Stmts	Branches	Funcs	Lines	Uncovered Lines

[github-actions]

Coverage after merging having_a_ruff_day into master will be

99.44%

Coverage Report for Changed Files

File	Stmts	Branches	Funcs	Lines	Uncovered Lines

[github-actions]

Coverage after merging having_a_ruff_day into master will be

99.44%

Coverage Report for Changed Files

File	Stmts	Branches	Funcs	Lines	Uncovered Lines

[github-actions]

Coverage after merging having_a_ruff_day into master will be

99.44%

Coverage Report for Changed Files

File	Stmts	Branches	Funcs	Lines	Uncovered Lines