Handle "distinct" #12
Description
When we query with "distinct", the array of objects returned doesn't fit the model but the ORM still tries and cast it. This is a problem.
We could implement a .distinct(field) at the manager level. This would give the benefit of being able to cast to the nested property type if needed.
A simpler approach would be to have a getRaw which would not try to build object or an option on the get method. (We might end up needing it anyway)