def child_change_history(self, caprid):
        return self.tree_base + "child-and-parents-relationships/"\
            + caprid + "/changes"
https://familysearch.org/developers/docs/api/tree/Child-and-Parents_Relationship_Change_History_resource
dataset/ETHPy150Open AmEv7Fam/familysearch-python-sdk-opensource/familysearch/changeHistory.py/ChangeHistory.child_change_history