D-Net

modified type for type variable. From int to Type

added new variables and methods

updated implementation to use iterator

specific iterator for country propagation

Added generic Iterator over the list of information gathered from the reducer

fix error on parsing abstract

updated to consider the new class Utils and the new values in Propagation Constants classes

updated to store properties of the value

class to contain the methods common to the propagation classes among the propagation types

update of the constants for the propagation