In accordance with the plans announced at Upcoming changes to Aggregate, the core team is no longer updating Aggregate. We will not fix bugs, add features, review PRs, improve documentation, release new versions, or answer support questions.
We've been communicating this reality to users over the last two years through the documentation, code repo, and in community announcements.
The core team (and the @TAB) believe that Central is production ready and better than Aggregate for most users, so we encourage you migrate from Aggregate as soon as possible.
Thanks to all that have contributed to Aggregate over the years. We couldn't have come this far without you!
P.S. If you'd like to stay up-to-date on other end of life announcements, watch the end-of-life tag.