message: gltfpack: Move byteStride to be next to byteLength
  This looks cleaner and might compress a tiny bit better.
diff: @@ -1908,12 +1908,12 @@ void writeBufferView(std::string& json, BufferView::Kind kind, size_t count, siz
  append(json, size_t(compressed_offset));
  append(json, ",\"byteLength\":");
  append(json, size_t(compressed_size));
  + append(json, ",\"byteStride\":");
  + append(json, stride);
  append(json, ",\"mode\":");
  append(json, size_t(compression));
  append(json, ",\"count\":");
  append(json, count);
  - append(json, ",\"byteStride\":");
  - append(json, stride);
  append(json, "}}");
  }
  append(json, "}");
  