Enhancements
- #6732 Update for 8.5 spec, add FieldValue and various fixes
- #6741 Fixes and tests relating to aggregations
- #6748 Refine AggregationDictionary
- #6755 Remove unsupported types and refactored namespaces
- #6762 Containers support fluent variant assignment
- #6769 Name and namespace cleanup
- #6779 Code gen for internally tagged union variant converters (issue: #6739)