Refactoring: Adding reference to PomonaSession from PomonaQuery.
Refactoring: API change for IPomonaDataSource, Query now returns PomonaResponse.
Refactoring: ApplyAndExecute in PomonaQuery cleaned up.
Implemented IQueryable Max and Min support.
Queryable Sum implemented for integers.
Sum also working for decimal and double.
POST now returns 201 Created instead of 200 OK when successful.
Version bump