This commit fixes a crash that could happen when a spawnable ticket was deleted before all requests in the queue had completed. Because of this crash the requests now only hold on to the payload of the ticket but not the ticket itself. As a side effect, callbacks can no longer provide the ticket itself so instead a unique id for the ticket is returned.
It's now possible to have high and normal priority calls on the spawnable entities manager. This allows for events like (de)spawning and retrieving information to be executed before already queued requests, though requests cannot be reordered on the same ticket. High priority calls are executed twice per frame, while normal priority calls are called only once.
Steve Pham
AMZN-koppersr
alexpete