Bump version to 0.3.4.

Fixed compatibility with FW 3.30.
Added setting to put a custom protocol version to avoid updates.
Added notifications via libnotify on Linux.
Added AppIndicator support for GNOME 3 and Unity.

src/forms/configwidget.h

@@ -48,6 +48,7 @@ private:
 
 private slots:
     void browseBtnPressed(int from);
+    void resetButtonPressed();
     void accept();
 };