add 'not-found' param to fs/get-in (just like clojure.core/get-in).
add (defn random-phrase) function: takes a specification of a head of a phrase, takes a random head chosen at random from lexical entries that match the spec, then recursively calls random-phrase on the subcat specs of the chosen head.
add avere1 (to have (a buyable thing))
add vp-save (workaround for vp symbol corruption)