Added full user tracking

lib/Client.js

@@ -481,6 +481,30 @@ var Client = (function () {
 
 						break;
 
+					case "PRESENCE_UPDATE":
+
+						var userInCache = self.getUser("id", data.user.id);
+
+						if (userInCache) {
+							//user exists
+							var presenceUser = new User(data.user);
+							if (presenceUser.equalsStrict(userInCache)) {
+								//they're exactly the same, an actual presence update
+								self.trigger("presence", {
+									user: userInCache,
+									status: data.status,
+									server: self.getServer("id", data.guild_id),
+									gameId: data.game_id
+								});
+							} else {
+								//one of their details changed.
+								self.trigger("userUpdate", userInCache, presenceUser);
+								self.userCache[self.userCache.indexOf(userInCache)] = presenceUser;
+							}
+						}
+
+						break;
+
 					default:
 						self.debug("received unknown packet");
 						self.trigger("unknown", dat);