* added enum values for new events
* hooked up directory sync event
* upgraded the OrganizationUpgrade ReferenceEvent
* Added metadata to the OrganizationUserInvited event noting if this is the first event sent from an organization
* Added metadata to the AdjustedSeats event
* Implemented vaultImported event
* Implemented FirstGroupAdded event
* Implemented FirstCollectionAdded event
* Implemented FirstSecretAdded event type
* Implemented SalesAssisted reference event
* changed events to match updated requirements
* renamed an event enum
