Push updates to newer clients first

src/Site/Site.py

@@ -452,6 +452,7 @@ class Site(object):
         num_connected_peers = len(peers)
 
         random.shuffle(peers)
+        peers = sorted(peers, key=lambda peer: peer.connection.handshake.get("rev", 0) < config.rev - 100)  # Prefer newer clients
 
         # Add more, non-connected peers
         peers_more = self.peers.values()