Hi @mac-, would you accept a PR to automatically convert strings defined with `date-time` formats to `Date` object? This is useful, for example, when saving `Date` objects to MongoDB - otherwise they are persisted as strings by default. Current behavior is here: https://github.com/mac-/ratify/blob/9f3b09dc5c93d5d4597f683405df52196a5e8eee/lib/RouteSchemaManager.js#L107 Seems this would be a breaking change. The only other [JSON schema string format](https://spacetelescope.github.io/understanding-json-schema/reference/string.html#built-in-formats) that has an equivalent Node type is `uri`, which we might want to convert automatically as well. Let me know what you think. Thanks!