Add env variable to run tests on ios or osx
Improved error message
fix spec
Handle iOS and OSX in the app delegate
fix test
Extract MotionDataWrapper::Delegate into a singleton MotionDataWrapper::Manager
Improve UnknownAttributeError message
Replace Kernet.const_get for the much faster Object.const_get
memoize the delegate
use correct file path in osx
better handle the attribute metadata
improve handling of nested attributes
improve the generation of the relatino proxy objects
do not generate association methods if the current class does not have an entity description