Important: Read the migration chapter in the manual before upgrading

Added:
- Node identifier and blank node identifier
- Multiple types for a node

Changed:
- Context moved from http://schema.org to https://schema.org/
- By default, markup is added to noindex pages, a configuration setting is available for deactivation

Fixed:
- Custom doktypes greater than 199 are rendered in breadcrumb list

Removed:
- Compatibility with TYPO3 v9 LTS
- Compatibility with PHP 7.2 and PHP 7.3
- The PSR-14 event and signal for (de)activating the embedding of markup are removed
- Signal/slots in favour of PSR-14 events
- Deprecated methods AbstractType-isEmpty() and SchemaManager-setMainEntityOfWebPage()
- Deprecated class TypesProvider