> _Originally released on 2019-05-28 09:06:00+00:00 ([link](https://github.com/zalando-incubator/kopf/releases/tag/0.12))._
New features:
* Basic tools for testing of the Kopf-based operators (background operator runner).
* `namespace`, `name`, `uid` kwargs for the handlers (were mentioned in the docs, absent in the code).
Other changes:
* Tests, tests, tests for the existing codebase (asyncio queueing).
* End-to-end tests with Minikube with real Kubernetes versions.
* Some little fixes detected during test writing.
* Contribution docs.