4.12.0

Fixes

• Support proxy models with non-model or abstract inheritance by @g-nie and @SafaAlfulaij in #158 and #154.
• Fix makemigrations issues with Django 5.1 by @pfouque in #165.

Changes

• Django 5.1 testing, dropped Django 3.2 / Postgres 12 support by @wesleykendall in #157.