Location for suggested updates for CONP DATS.json format.

[emmetaobrien]

This issue is intended for storing and discussing comments on, and suggested changes to, the CONP DATS.json fields documented in https://github.com/CONP-PCNO/conp-documentation/blob/master/CONP_DATS_fields.md. That file is intended to serve as a master reference, and any issues should be agreed upon here before being applied to that document.