ensure game isn't suspended when we close

src/gui.rs

@@ -340,6 +340,8 @@ impl Drop for App {
         let mut config_file = File::create(config_path).unwrap();
         let json = serde_json::to_string_pretty(&persistent_state).unwrap();
         config_file.write_all(json.as_bytes()).unwrap();
+        //
+        features::empty_session::deactivate(self);
     }
 }