Pamhyr2: Model: Add data traversal method on each pamhyr object.

src/Model/Tools/PamhyrDict.py

@@ -97,10 +97,7 @@ class PamhyrModelDict(SQLSubModel):
             Nothing
 
         """
-        if predicate(self, data):
-            modifier(self, data)
-
-        for key in self._lst:
+        for key in self._dict:
             self._dict[key]\
                 ._data_traversal(predicate, modifier, data)