ensured building on ubuntu 18.04

main.cpp

@@ -5,7 +5,13 @@
 #include <QApplication>
 #include <curl/curl.h>
 #include <iostream>
-#include <filesystem>
+#if __GNUC__ < 8
+#	include <experimental/filesystem>
+	using namespace std::experimental::filesystem;
+#else
+#	include <filesystem>
+	using std::filesystem;
+#endif
 #include <fstream>
 #include <QTranslator>
 
@@ -25,7 +31,7 @@ int main(int argc, char *argv[]) {
     curl_global_init(CURL_GLOBAL_ALL);
 
     std::string program_data_path = get_path_relative_to_home(".local/share/checks_parser");
-    std::filesystem::create_directories(program_data_path);
+    create_directories(program_data_path);
 
     std::string settings_file_path =
         get_path_relative_to_home(".local/share/checks_parser/settings.json");