Hi,
We switched from MySQL to Postgres a few years ago, but didn't want to give up this feature set. We're still on V2, which I know isn't maintained, plus we haven't written all the tests for it, hence why I'm not submitting a PR. But I wanted to point out the branch in case anyone else could make use of it / wants to take over getting this merged into mainline. If once we finally upgrade to Doctrine ORM 3 / DBAL 4, we'll try to work towards submitting a few PRs for the various features.
https://github.com/nesl247/doctrine-mysql-come-back/tree/postgres
And thanks to #59 for the inspiration on the implementation for delays.
Thanks!