message: Add structure type to exception method to help debugging
diff: #include "StructureCatalogue.h"
  +#include <string>
  #include <stdexcept>
  @@ -174,7 +175,7 @@ Structure* StructureCatalogue::get(StructureID type)
  break;
  default:
  - throw std::runtime_error("StructureCatalogue::get(): Unsupported structure type called.");
  + throw std::runtime_error("StructureCatalogue::get(): Unsupported structure type: " + std::to_string(type));
  }
  if (structure)
  