Ordering envelopes
Created originally on Bitbucket by cdevienne (Christophe de Vienne)
In some case it can be interesting to respect a strict ordering of the envelopes sent to an actor.
The order would be determined by the order of the envelopers from a emitter. The order could apply on a single graph or several graph, one or several emitters.
One mean to achieve this would be to add a 'CorrelationID' on the envelopes, and all the envelopes with the same CorrelationID would be ordered when sent to an actor.
It could also be used to enforce the completion of a Process before any other process from with same ID could start.
Related to #79 (closed) (emission strategy)