@ivanov keeps bugging me about this one but never opens an Issue for it when I ask, so I'll just assign it to him ;)
It does hightly the issue that has been raised in the past that our message spec may want to be versioned somehow, and folding that versioning into the spec itself (presumably as a field in the header).
Thanks, glad to see @ivanov working on it ;)
i hate you guys.... this kind of public humiliation is exactly the sort of reason why I would start working on it. you know how to push my buttons, expect a PR shortly
include execution_count in pyin msgs, closes #1619