spree/spree — pull request #5079 by plongyear (2014-07-29 15:56:36+00:00)
Title: Add postal code validation using the Twitter Cldr gem

We would like the ability to validate international postal code formats before accepting them. To do this, we use the twitter cldr gem. We only attempt to validate if the address has a country with an iso that is supported by TwitterCldr.