message: Avoid array index overflow in TransformFilter functor
  Currently it seems to be writing up to NDIMS + 1 index in an array of size NDIMS.
diff: @@ -159,7 +159,7 @@ struct TransformFilter {
  Eigen::DSizes<IndexType, NDIMS> expanded_dims;
  expanded_dims[0] = in.dimension(NDIMS - 1); // output filters
  expanded_dims[1] = in.dimension(NDIMS - 2); // input filters
  - for (int i = 0; i < NDIMS; ++i) { // spatial dimensions
  + for (int i = 0; i < NDIMS - 2; ++i) { // spatial dimensions
  expanded_dims[i + 2] = in.dimension(i);
  }
  