'customSuperentity' method's bug fixed: sometimes - [NSEntityDescription managedObjectClassName] returns an empty NSString, but should return 'NSManagedObject' instead.
Additional NSEntityDescription property was added - 'CTX_dtoSuperclassName'. Tests for this addition were implemented. 'tearDown' method's memory leak in CTXAdditionsTests was fixed. Lot's of dependencies were added into CTXAdditionsTests target (should be improved in future).