0.12

Originally released on 2019-05-28 09:06:00+00:00 (link).

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.