* Fix pagination bug causing only the first two pages of results to be returned
* Add Photo.uuid, observation_id, and user_id fields (for compatibility with inaturalist-open-data)
* Handle errors in ObservationField type conversions
* Improve terminal output for nested model objects (like `Observation.taxon`, `Taxon.ancestors`, etc.)
* If `Taxon.ancestor_ids` is missing, populate from either `ancestry` string or `ancestor` objects, if possible