How can I be notified when the token is reset after I've connected to the Discord gateway?

[wasd96040501]

I attempted to reset the token after establishing a connection with the Discord gateway, but it appears that session.LastHeartbeatAck continues to update.

Edited:
In line 608, it appears we're never notified when authentication fails. What if we added a channel variable to the Session struct? (I would be more than happy to assist by making a PR).

discordgo/wsapi.go

Lines 603 to 614 in f7800ef

	if e.Operation == 9 {
	s.log(LogInformational, "sending identify packet to gateway in response to Op9")
	err = s.identify()
	if err != nil {
	s.log(LogWarning, "error sending gateway identify packet, %s, %s", s.gateway, err)
	return e, err
	}
	return e, nil
	}