Version 8.22.0

* Feature: Support for the following new gift card transactions:
ActivateReversal, DeactivateReversal, LoadReversal, RefundReversal,
UnloadReversal, DepositReversal
* Feature: UpdateSubscription now can take token or paypage updates, and
can return token in the response
* Feature: Support for virtualGiftCard in giftCard activations
* Feature: Gift Card responses can be returned from AuthReversal
Fix unit tests and add an additional note to virtualGiftCard support