This release makes stateful testing more likely to tell you if you do something unexpected and unsupported: The "return_value" health check now applies to "rule()" and "initialize()" rules, if they don't have "target" bundles, as well as "invariant()". Using a "consumes()" bundle as a "target" is deprecated, and will be an error in a future version. If existing code triggers these new checks, check for related bugs and misunderstandings - these patterns never had any effect. The canonical version of these notes (with links) is on readthedocs.