numpy vs 1.11.3 compatibility

tfields/core.py

@@ -1550,7 +1550,7 @@ class TensorFields(Tensors):
 
             Masking
 
-            >>> masked = scalar_field[[True, False, True]]
+            >>> masked = scalar_field[np.array([True, False, True])]
             >>> assert masked.equal([[0, 0, 0], [0, -1, 0]])
             >>> assert masked.fields[0].equal([42, 10.5])
             >>> assert masked.fields[1].equal([1, 3])
@@ -1817,7 +1817,7 @@ class TensorMaps(TensorFields):
 
             Masking
 
-            >>> masked = mesh[[True, False, True, True, True]]
+            >>> masked = mesh[np.array([True, False, True, True, True])]
             >>> assert masked.equal([[0, 0, 0], [0, -1, 0], [1, 1, 1], [-1, -1, -1]])
             >>> assert masked.fields[0].equal([42, 10.5, 1, 1])
             >>> assert masked.fields[1].equal([1, 3, 3, 3])