message: fix data type inconsistency for cifar10
diff: @@ -59,4 +59,7 @@ def load_data():
  x_train = x_train.transpose(0, 2, 3, 1)
  x_test = x_test.transpose(0, 2, 3, 1)
  + x_test = x_test.astype(x_train.dtype)
  + y_test = y_test.astype(y_train.dtype)
  +
  return (x_train, y_train), (x_test, y_test)
  