Release Notes
1. Add support for `Oceanbase`'s mysql and oracle modes
2. Add support for `PostGIS`
3. Fix the problem that the test database cannot be deleted after the django test is completed
4. Remove support for `named` sql parameters, Use `pyformat` to handle SQL named parameters
5. JDBC backends: Add support for `pyformat` SQL named parameters and other updates
For the complete changelog [look here](https://github.com/altairbow/django-db-connection-pool/compare/48dfc65...d9aaf1a).