Shopify/active_merchant — pull request #272 by stiak (2012-02-16 23:32:34+00:00)
Title: Paypal: Validate generated XML against paypal xsd's

Paypal isn't always very exacting about the order of it's elements, but some features won't work unless the order is correct. This change verifies the xml generated is valid against the paypal's xsd's. I'm not sure where to put the xsd's in the file structure, let me know if there is another preferred place for them.