event in users for nick rename

modules/users/config.json

@@ -1,5 +1,6 @@
 {
     "ignorable": false,
+    "dependencies": [ "command", "event" ],
     "dbKeys": [ "knownUsers" ],
     "help": "https://github.com/reality/depressionbot/blob/master/modules/users/README.md"
 }

modules/users/users.js

@@ -57,7 +57,7 @@ var users = function(dbot) {
             var newNick = event.params.substr(1);
             if(!this.api.isKnownUser(newNick)) {
                 knownUsers.aliases[newNick] = this.api.resolveUser(event.server, event.user);
-                if(_.has(dbot.modules, 'stats')) dbot.api.stats.renameStats(event.server, newNick);
+                dbot.api.event.emit('nick_change', [ event.server, newNick ]);
             }
         }
     }.bind(this);