2.0 Release - Githubissues

Added global header to import, RZDataBinding.h
Renamed RZDBKeyBindingFunction -> RZDBKeyBindingTransform
Added several convenience constants for common use case binding transforms
Removed RZDBObservableObject and instead exposed rz_cleanupObservers if RZDB_AUTOMATIC_CLEANUP is disabled
Binding and target/actions no longer use unneeded KVO options when registering observers
Added callImmediately version of rz_addTarget:action:forKeyPathChanges:
Improved tests and documentation

Rightpoint / RZDataBinding