about the built-in per-plugin persistence: it is just python pickle based at the moment but there is some recent interest on abstracting it for other storage ba

about the built-in per-plugin persistence: it is just python pickle based at the moment but there is some recent interest on abstracting it for other storage backends like redis (https://github.com/gbin/err/issues/478 https://github.com/gbin/err/issues/478).