Feature/Replay events in batches

[rhyslbw]

Motivation

Required for performing a large-scale full replay of all events for:

1. Projection rebuilding via Space.jobQueue
2. Migration path

This is a simple enhancement to the existing functionality of replaying events, so it's up to the implementor to either lock the domain from state change during the replay, or do a diff and patch at the end

Design Considerations

Support multiple running application instances

Only one instance should perform the replay, even though all are running and capable

• space:job-queue

  Sequential batching

Events replayed in chronological order, across all batches.

• each batch depends on completion of the previous

  Lifecycle hooks for implementation to control state-change while running

Either events or simple hooks