Ensuring that we convert REXML values to strings
Adding coverage for origin conversion to Location objects
Merge remote-tracking branch 'shopify/master' into canada_post_fix
Updating Canada Post test based on PR feedback

After a little bit of discussion, we have decided that
checking the String nature of these properties provide
little value and can be removed.
Merge pull request #146 from akeem/canada_post_fix

Ensure that city, province, and address returned from Canada post are indeed Strings