Event delay

[charlessolar]

Currently to overcome the event ordering issue I put a 2 second delay between receiving events from ES and processing the event. As explained here: https://github.com/volak/Aggregates.NET/blob/master/src/Aggregates.NET.Consumer/Internal/EventSubscriber.cs#L368

A better solution would be to keep track of streams the client has seen and a rough estimate of the event number I'm expecting then do a delay only if I detect an out of order event and only for the duration it takes for the next event to come.

We'll have to insert some clever algorithm tricks like bloom filters. Won't need to be 100% certain but 99.99 at least

[charlessolar]

No longer an issue after improving the projection design