Added

• Tree: Add Nested::ALLOWED_NODE_POSITIONS constant in order to expose the available node positions
• Support for doctrine/collections 2.0
• Support for doctrine/event-manager 2.0
• Loggable: Add LogEntryInterface interface in order to be implemented by log entry models

Fixed

• Sortable: Fix return value check of Comparable interface (#2541)
• Uploadable: Retrieve the correct metadata when uploading entities of different classes (#2071)
• Translatable: Fix property existence check at TranslatableListener::getTranslatableLocale()

Deprecated

• In order to close the API, @final and @internal annotations were added to all non base classes, which means that extending these classes is deprecated and can not be inherited in version 4.0.
• Sortable: Accepting a return type other than "integer" from Comparable::compareTo() is deprecated in SortableListener::postFlush(). This will not be accepted in version 4.0.
• Deprecate the annotation reader being allowed to be any object. In 4.0, a Doctrine\Common\Annotations\Reader or Gedmo\Mapping\Driver\AttributeReader instance will be required.
• Gedmo\DoctrineExtensions::registerAnnotations() is deprecated and will be removed in 4.0, the method has been no-op'd as all supported doctrine/annotations versions support autoloading
• Loggable: Constants LoggableListener::ACTION_CREATE, LoggableListener::ACTION_UPDATE and LoggableListener::ACTION_REMOVE are deprecated. Use LogEntryInterface::ACTION_CREATE, LogEntryInterface::ACTION_UPDATE and LogEntryInterface::ACTION_REMOVE instead.