Bump the version, as we extended the config format

main.go

@@ -26,7 +26,7 @@ var (
 	).Author(
 		"Lukas Burgey",
 	).Version(
-		"v2.1.3",
+		"v2.2.0",
 	)
 	cmdStart         = app.Command("start", "Starts the client in its normal operation mode.").Default()
 	cmdDeregister    = app.Command("deregister", "Before disabling the client: Use deregister to inform the backend that the client ceases operation.")