Feature/events

This feature will allow rails applications to instrument the event "protected_record_change_request", like so:

    ActiveSupport::Notifications.instrument("protected_record_change_request", {
      change_request: update_result.data[:change_request],
      record_managers: User.where(protected_record_manager: true)
    })

Doing so will send an email to all users who have the protected_record_manager attribute set to true.