* Made Media Resource "locator" optional and changed reference from link to relationship in Programm Location and Segment.
* Added Category type and renamed "categories" to "category" in Entry.
* Renamed "category" to "awardCategory" in Award.
* Removed "subtitle" and moved to "alternativeTitle".
* Removed "summary" and moved to "description".
* Renamed "Collection" to "Content Collection".
* Renamed "Programme Location" to "Programme Publication".
* Renamed Rights "temporal" to "rightsTemporal".
* Added Agent type and renamed Contact to Person.
* Simplified "filterBy" to allow filtering only of top level fields.