added ability to void invoices.

src/clj/auto_ap/db/invoices.clj

@@ -64,7 +64,7 @@
   (j/update! (get-conn) :invoices {:imported true} [] ))
 
 (defn update [v]
-  (j/update! (get-conn) :invoices v ["id = ?" (:id v)])
+  (j/update! (get-conn) :invoices (clj->db v) ["id = ?" (:id v)])
   (get-by-id (:id v)))
 
 (defn reject []