message: temp fix for U16toU8 edgecase
diff: #include "CNStructs.hpp"
  std::string U16toU8(char16_t* src) {
  + try {
  std::wstring_convert<std::codecvt_utf8_utf16<char16_t>,char16_t> convert;
  return convert.to_bytes(src);
  + } catch(std::exception e) {
  + return "";
  + }
  }
  // returns number of char16_t that was written at des
  