migrate to boost::regex

main.cpp

@@ -50,12 +50,10 @@ int main(int argc, char *argv[]) {
 
     QTranslator translator;
     QString lang = "en_US";
+
     bool languageSettingPresent = false;
-#if NLOHMANN_JSON_VERSION_MAJOR < 3 && NLOHMANN_JSON_VERSION_MINOR < 6 && NLOHMANN_JSON_VERSION_PATCH < 0
     languageSettingPresent = s.get_all_settings().find("language") != s.get_all_settings().end();
-#else
-    languageSettingPresent = s.get_all_settings().contains("language");
-#endif
+
     if (languageSettingPresent) {
         lang = QString::fromStdString(s.get_all_settings()["language"]);
     } else if (translator.load(":/translation/"+QLocale::system().name()+".qm")) {