Fix over-interpolation issues with percent signs

httplistener/github.go

 
 		log.Infof("%s [%s -> %s] GitHub event received", request.RemoteAddr, repo, channel)
 		for _, msg := range msgs {
-			hl.irc.Privmsgf(channel, msg)
+			hl.irc.Privmsg(channel, msg)
 		}
 	}
 }