== Version 8.20.0 (August 7, 2013)

* Backwards-Incompatible Feature: More initial support for Recurring,
including the ability to update or cancel subscriptions.
LitleBatchResponse::getNextResponse now returns
LitleTransactionInterface instead of TransactionType.  This is to
support the new recurring transaction types which also implement
TransactionType.  Most existing uses of TransactionType can just cast
from LitleTransactionInterface without any other changes.  The
LitleResponseParser interface also includes 3 additional processor
methods to handle the 3 transaction types.
* Feature: Addition of an adapter to the LitleResponseProcessor so that
clients don't need to implement all of the methods if most are not used.