Add convergence level output to new Controller

nifty5/minimization/iteration_controllers.py

@@ -346,8 +346,9 @@ class AbsDeltaEnergyController(IterationController):
         # report
         if self._name is not None:
             logger.info(
-                "{}: Iteration #{} energy={:.6E} diff={:.6E} crit={:.6E}"
-                .format(self._name, self._itcount, Eval, diff, self._deltaE))
+                "{}: Iteration #{} energy={:.6E} diff={:.6E} crit={:.6E} clvl={}"
+                .format(self._name, self._itcount, Eval, diff, self._deltaE,
+                        self._ccount))
 
         # Are we done?
         if self._iteration_limit is not None: