The RESO Data Dictionary 2.0 is in the same format (flat) as found in the newer DD 1.7 from issue #111 and includes added resources, fields, and lookups.
DD Wiki 2.0 Change details can be found in the RESO Data Dictionary Workgroup discussion area
PR Pending discussion with @darnjo
RESODataDictionary-2.0 2022-05-30.xlsx
