Shopify/active_merchant — pull request #1064 by bslobodin (2014-03-06 15:50:07+00:00)
Title: Handle missing secureHash in PayDollar notifications

It looks like at least some notifications from PayDollar do not contain ``secureHash``. This fix fails ``acknowledge`` for those, but I'm still waiting for a response as to what those notifications are.

@edward to review.