print version on --version switch

src/main.cpp

@@ -1,4 +1,6 @@
 #include <QApplication>
+#include <QDebug>
+#include <QMessageBox>
 #include <QStringList>
 #include <memory>
 
@@ -6,6 +8,7 @@
 #include "RunGui.hpp"
 #include "common/Args.hpp"
 #include "common/Modes.hpp"
+#include "common/Version.hpp"
 #include "singletons/Paths.hpp"
 #include "singletons/Settings.hpp"
 #include "util/IncognitoBrowser.hpp"
@@ -20,15 +23,19 @@ int main(int argc, char **argv)
     auto args = QStringList();
     std::transform(argv + 1, argv + argc, std::back_inserter(args),
                    [&](auto s) { return s; });
+    initArgs(args);
 
     // run in gui mode or browser extension host mode
     if (shouldRunBrowserExtensionHost(args))
     {
         runBrowserExtensionHost();
     }
+    else if (getArgs().printVersion)
+    {
+        qInfo().noquote() << Version::getInstance().getFullVersion();
+    }
     else
     {
-        initArgs(args);
         Paths *paths{};
 
         try
@@ -60,4 +67,5 @@ int main(int argc, char **argv)
 
         runGui(a, *paths, settings);
     }
+    return 0;
 }