* [ ] Add caching layer: This cache layer can built on top of the utxo::ledger,
  because all operations can be safely cached until a new transaction
  referencing their account is issued, by that point, all the caches related to
  anaccount can be evicted
* [ ] Build admin interface
* [ ] ADd memo to changes. Build append only table with all movements as
  inserts. Wraps the objects to all their changes