Enhancements to Events and Event Sessions

Get All Events includes the additional fields to the learner object:
registration_status
attended_event
invitation_date
declined_date
is_archived

Get All Events includes the additional field to the event object:
type => null, "single", "multiple"

Get Event Session includes an additional field:
trainingClassSessionInstructors
which includes the session instructor's name, email, and id under the user key.