Recompiling the RDFResource class breaks protocol matching on existing RDFResource objects in memory

[theferrit32]

1. Start a REPL
2. Load an RDFResource somehow (genegraph.database.query/select, or something)
3. Do a q/ld-> function call on it for a predicate that exists (this works)
4. Recompile the genegraph.database.query.types module in the REPL, which includes the RDFResource class.
5. Repeat step (3). (this doesn't work)

Performing the operation that constructed the RDFResource object from (2) makes it work again. So this seems like something to do with how protocols attach to classes/deftypes in clojure. Recompiling the class makes the protocol functions not recognize an object made from the class prior to the recompilation.