Message 378350 - Python tracker

AFAIK the normal way of registering types (dispatcher.register(<type>)) also requires that registered type be defined at the execution type. I guess, if we are going to support such a thing, we might end up with supporting passing strings into the .register() as the initial argument of matching type to be consistent. Anyways, this would be a feature request for 3.10+, so changing the version info.