Attribute Serialization for clj-record

I've just pushed clj-record support for attribute serialization to github. This uses clj-record callbacks and clojure.core's pr and read functions to allow you to store many standard Clojure and Java types as record attributes in varchar columns of your database.

I'm not crazy about calling this feature "serialization" since it's not using Java's serialization mechanism (though I'm very happy about Clojure's fairly human-readable pr/prn/read format). If you have thoughts on a better name, let me hear them.