Something changed the end of EstTrans, so I added a newline

Author: reevesc7

tpot/builtin_modules/estimatortransformer.py

@@ -178,4 +178,5 @@ def __sklearn_is_fitted__(self):
     @property
     def classes_(self):
         """The classes labels. Only exist if the last step is a classifier."""
-        return self.estimator._classes
+        return self.estimator._classes
+