Switched ios-shared to XCTest.
Merge branch 'master' of github.com:setdirection/ios-shared
Added NSSet support to SDDataMap.
Fixed issue with type conversion between base objects.
Fixed issue with arrays not being type converted unless they were model objects.
Added test cases for SDDataMap and dummy model objects for said cases.
Merge branch 'master' of github.com:setdirection/ios-shared