I noticed a TODO comment for adding a logger in server-packet.go. I'm interested in helping out with this, but wanted to clarify a few things first.

1. Is this something you would welcome a PR for?
2. If so, is there a preferred logger? My preference is typically glog, but happy to use something else if preferred.

The logging would only be for things like errors, not debugging information like successful connections or packet responses.

The net/http.*Server just uses the log package for this (see net/http.*Server.ErrorLog). What are you thoughts on that?