[v1.3.20](https://github.com/ash-project/ash_postgres/compare/v1.3.19...v1.3.20) (2023-04-22)
Bug Fixes:
* subquery aggregates when a distinct is being added
* don't call `.table` on `nil`
* wrap `datetime_add` in parenthesis
* handle primary key changes properly
Improvements:
* update ash
* don't call `.table` on `nil` `snapshot`
* use digraph for operation ordering