/* Isolate and return the elements that are different between two lists */
void ListDifference(const std::string &one, const std::string &two, char sep,
std::string& mleft, std::string& mright);
/* Isolate and return the elements that are different between two lists */
void ListDifference(const std::string &one, const std::string &two, char sep,
std::string& mleft, std::string& mright);