| ⇢ | A | UniqueSlugNormalizer added |
| ⇢ | A | UniqueSlugNormalizer::normalize() added | |
| ⇢ | A | AnonymousFootnoteRefParser::setEnvironment() added | |
| ⇢ | A | UniqueSlugNormalizer::onDocumentRendered() added | |
| ⇢ | A | UniqueSlugNormalizer::__construct() added | |
| ⇢ | A | Environment::getSlugNormalizer() added | |
| ⇢ | A | HeadingPermalinkProcessor::setEnvironment() added | |
| A | ↛ | HeadingPermalinkProcessor::ensureUnique() removed | |
| A | ↛ | AnonymousFootnoteRefParser::setConfiguration() removed | |
| A | ↛ | HeadingPermalinkProcessor::setConfiguration() removed | |
| A | ↛ | AnonymousFootnoteRefParser::__construct() removed |