SWARM-BREAKING: fix crypto server/client orientation

Previously servers were connecting as clients, and clients as servers.
This was having an impact (somehow) on holepunched peers. This fixes it
so each role behaves as such from a hypercore-protocol perspective.

swarm.js

@@ -25,7 +25,7 @@ module.exports = function (cabal, opts, cb) {
     swarm.on('connection', function (socket, info) {
       let remoteKey
 
-      var r = cabal.replicate(!info.client)
+      var r = cabal.replicate(info.client)
       pump(socket, r, socket, function (err) {
         if (err) debug('ERROR', err)
         if (remoteKey) cabal._removeConnection(remoteKey)