Replaced CreateHashKey with CreateEntityKey
Fixed adding of owned entities if the property type was a base class of the instance type
GetEntitySetName now also works if the type of the entity is in a set of the base type
Merge pull request #36 from andypelzer/fixes

Smaller bug fixes
Added a test ensuring that Guid keys work
Merge pull request #39 from andypelzer/guids

Added a test ensuring that Guid keys work