Added unit test for propagate changes in breadth first iterations
Added unit test for propagate changes in breadth first iterations

Hypercubed/model,curran/model,Hypercubed/model,pastorenue/model,Hypercubed/model,curran/model,curran/model,curran/model,pastorenue/model,Hypercubed/model,pastorenue/model,pastorenue/model