Django Modelcluster

django-modelcluster is a Django extension that allows working with 'clusters' of related models as a single unit, independently of the database. It introduces `ParentalKey` and `ClusterableModel` to enable in-memory manipulation of related objects, which is particularly useful for features like previews and revisions in content management systems like Wagtail. The current version is 6.4.1, and it maintains a consistent release schedule, often aligning with Django and Python version support.