v4.0.0

Overall, versions 3 and 4 are nearly identical and the main changes were made in SchemaInterface. An extra parameter ContextInterface was added to SchemaInterface::getAttributes and SchemaInterface::getRelationships.

The context contains extra information about the resource such as its position in the data tree and encoder options such as filter fieldset and included paths. The context might be used for smarter loading resources from a database.

More in Upgrade Notes.