Application implements the Serializable interface, which is deprecated

Fixed for PHP 8.1 
For more information: https://php.watch/versions/8.1/serializable-deprecated

Author: saruman

src/Application.php

@@ -107,4 +107,7 @@ public function unserialize($serialized)
 
         $this->__construct($id, $secret);
     }
+    
+    public function __serialize() {}
+	public function __unserialize(array $data) {}
 }