spiral /
components
| ⇢ | A | NegativeRule added | |
| ⇢ | A | PositiveRule added |
| ⇢ | B | RuleManager::validRule() added | |
| ⇢ | A | NegativeRule::allows() added | |
| ⇢ | A | PositiveRule::allows() added | |
| B | ↗ | A | Guard::allows() improved |
| B | ↛ | RuleManager::validateRule() removed |
