Features
- Optimized `Events` diff queries by ~100x via a subquery instead of `LAG` windows by [lokhman](https://github.com/lokhman) in [#173](https://github.com/Opus10/django-pghistory/pull/173).
- Optimized object-level `Events` queries in the django admin by avoiding `UNION` queries by [lokhman](https://github.com/lokhman) in [#174](https://github.com/Opus10/django-pghistory/pull/174).
Changes
- Added Python 3.13 support, dropped Python 3.8. Added Postgres17 support by [wesleykendall](https://github.com/wesleykendall) in [#175](https://github.com/Opus10/django-pghistory/pull/175).