Update react hooks

[dvingo]

Lots of work to get proper caching of subscriptions when using react hooks.

• all subscriptions used for the lifetime of a component are cached until it is unmounted.
• use-sub-map is now a macro that expands to use-sub-memo calls
• use-sub-memo will deal with memoized subscription vectors for user calls by default but can be overridden if needed.
• fixed caching of subscription functions by requiring them all to have names stored in the function metadata to be used as the cache key
• add defsub defsubraw helpers
• eql queries performance improvements, on par or better than fulcro's db->tree