| ⇢ | C | Base::validate() added | |
| ⇢ | B | Link::validate() added | |
| ⇢ | A | Html::validate() added | |
| ⇢ | A | Meta::getAllowedAttrbutes() added | |
| ⇢ | A | Style::getAllowedAttrbutes() added | |
| ⇢ | A | AbstractToken::setIsValid() added | |
| ⇢ | A | Element::handleValidationError() added | |
| ⇢ | A | Html::getAllowedAttrbutes() added | |
| ⇢ | A | Link::getAllowedAttrbutes() added | |
| ⇢ | A | Element::hasAttribute() added | |
| A | ↘ | B | Element::toString() got worse |
| A | ↘ | B | AbstractToken::setParent() got worse |
| B | ↘ | C | Element::validate() got worse |