Event Sourcing Event Store

[paulespinosa]

What changes did you make?

• Implemented an in-memory Event Store
• Implemented rudimentary Invite features with tests as an example implementation of Event Sourcing.

Rationale behind the changes?

• Event sourcing can enable audit logging, deep domain insight, time traveling, optimistic concurrency

Testing done for these changes

• Unit tests are included

What did you learn or can share that is new?(optional)

• There are various ways to implement an Event Store. This is just one of many possible implementations.
• There are many ways to implement Event Sourced objects. This is just one of many possible implementations.