fixed bug in load_results for numpy>=1.16

yafe/base.py

@@ -1069,7 +1069,8 @@ class Experiment:
             If no collected results file can be found.
         """
         if (self.xp_path / 'results.npz').exists():
-            data = np.load(str(self.xp_path / 'results.npz'))
+            data = np.load(str(self.xp_path / 'results.npz'),
+                           allow_pickle=True)
             if array_type == 'numpy':
                 return (data['results'],
                         data['axes_labels'],