Provide configuration hooks by kind_of? types of things in args or return values

• Suture.register_comparator(User, MyUserComparator), for comparing complex types for which == would be inappropriate (equality from the app's perspective differs substantially from "good enough" for Suture's verification steps)

• Logging: when there's a Suture.verify failure in test mode, print instructions on building marshalling/comparator adapters

• QUESTION: should we add a marshaller API as well? Leaning towards no: they should just override marshal_dump if they have something they don't want persisted. (Idea was: Suture.register_marshaller(ActiveRecord::Base, MyActiveRecordMarshaller), which would enable folks to, say, drop the timestamps columns in either direction to make comparison have fewer false negatives)