Moved ItemList out of CreativeWork and extended the domain for CreativeWork properties needed for new ItemList.
Added ItemList examples: Ordered List and MusicAlbum.
Added 5 new Action types for activating devices and the properties contingentOnOffer and notAvailableAtOrFrom.
Merge pull request #5 from vholland/sdo-meltingpot

Added 5 new Action types for activating/deactivating devices and the properties contingentOnOffer and notAvailableAtOrFrom.