PublishedEvents should see events published from asynchronous event listeners, too #116
Description
Currently, PublishedEvents is backed by a ThreadLocal to isolate the test execution from others potentially running in parallel. That unfortunately means, that events published asynchronous event listeners are not seen by PublishedEvents as they are published by the task executing thread.
We should switch to an InheritableThreadLocal for the event capturing to see all events that originate in threads spawned by the test executing one as well.