Apply repo-review rule PP302:

	Must have a minversion=, and must be at least 6
	(first version to support pyproject.toml configuration).

Apply repo-review rule PP303:

	The `testpaths` setting should be set to a reasonable default.

Apply repo-review rule PP304:

	log_cli_level should be set. This will allow logs to be displayed on failures.

Apply repo-review rule PP306:

	--strict-config should be in addopts = [...].
	This forces an error if a config setting is misspelled.

Apply repo-review rule PP307:

	--strict-markers should be in addopts = [...]. This forces
	all markers to be specified in config, avoiding misspellings.

Apply repo-review rule PP308:

	An explicit summary flag like -ra should be in addopts = [...]
	(print summary of all fails/errors).

Apply repo-review rule PC191:

	If --fix is present, --show-fixes must be too.