Support for Do listener in addition to Entry and Exit

[mc-allen]

UML states have entry/exit actions, which kstatemachine supports, and also a "do" action which is intended for periodic processing. When "do" is handled by a statechart, it is handled at the leaf state, and then propagated down to every parent recursively so each active state can run their "do" callbacks. I didn't see a way to do this in kstatemachine, maybe I missed it? If not, could this be a feature request?

[nsk90]

Hi, looks there is no "do" concept in the library. Could you explain the details at what moment and by what kind of action "do" callback should be triggered? Maybe there is a sample with docs in another library?