Shopify/active_merchant — pull request #499 by fabiokr (2012-11-05 19:18:21+00:00)
Title: Adds support for subscription credit on Cybersource

Follow up to #469

This pull request allows one to refund a Cybersource subscription (stand alone credit http://support.cybersource.com/cybskb/index?page=content&id=C138&actp=LIST).

cc/ @jmazzi @tfwright @itspriddle