Publicizes WarehouseExtensions
Merge branch '1.5.0' of https://github.com/rustyswayne/Merchello into 1.5.0
Adds CreateShipment to IShipmentService and publicizes the CustomerKey on the Invoice
Updated catalog key reference to use Constants reference.
Removed asynchronous save
Publicized SalesHistoryAuditingExtensions
Merge pull request #934 from rustyswayne/1.5.0

Publicizes auditing extensions and add CreateShipment to IShipmentService