Thank you for providing this library. It's working great so far on a Heroku deployment, providing a noticeable boost for some loads.

We needed to support the postgis driver and it appears to work fine when specifying that module: https://github.com/lincolnloop/django-postgrespool/blob/master/django_postgrespool/base.py#L11-L14

Could the library support an optional setting for specifying the driver module? This way you could theoretically support any Django-compatible Postgres driver.

Open to suggestions, thanks.