UCO Version 0.6.0 is primarily focused on adding several community needed classes (URLHistory, refactoring Contact, OnlineService, Profile, etc.) and properties, refactoring and cleaning up Address subclass structure, adding specific subclasses of ObservableObject, renaming of non-observable namespace Facet subclasses to include “Facet” at the end, clarifying and normalizing all class definitions to make the ontology more robust and complete, and cleanup of several minor issues and bugs.