message: Use dictionaryToAttributes for robots list
diff: @@ -71,9 +71,9 @@ namespace
  if (i != robots.size() - 1) { str << ","; } // kind of a kludge
  }
  - auto* robotsElement = new NAS2D::Xml::XmlElement("robots");
  - robotsElement->attribute("robots", str.str());
  - structureElement->linkEndChild(robotsElement);
  + structureElement->linkEndChild(
  + NAS2D::dictionaryToAttributes("robots", {{{"robots", str.str()}}})
  + );
  }
  if (structure->structureClass() == Structure::StructureClass::FoodProduction ||
  