Bump protocol version since this is a mandatory consensus change, in the future we can make this a minimum protocol version

src/version.h

@@ -1,6 +1,7 @@
 // Copyright (c) 2012-2014 The Bitcoin Core developers
+// Copyright (c) 2019-2020 The Hush developers
 // Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or https://www.opensource.org/licenses/mit-license.php
 
 /******************************************************************************
  * Copyright © 2014-2019 The SuperNET Developers.                             *
@@ -24,7 +25,7 @@
  * network protocol versioning
  */
 
-static const int PROTOCOL_VERSION = 170008;
+static const int PROTOCOL_VERSION = 170009;
 
 //! initial proto version, to be increased after version/verack negotiation
 static const int INIT_PROTO_VERSION = 209;