message: Const correctness update.
diff: @@ -123,9 +123,9 @@ namespace NovelRT {
  //rect.drawObject();
  //imageRect.drawObject();
  - for(auto& value : _renderObjects)
  + for(const auto& value : _renderObjects)
  {
  - for(auto& renderObj : value.second)
  + for(const auto& renderObj : value.second)
  {
  renderObj->drawObject();
  }
  