spree/spree — pull request #3108 by rounders (2013-05-28 20:01:44+00:00)
Title: pass country_id as data to jQuery.get

if your default url options happen to include ?locale=en then
the previous implementation would end up generating:
api/states?locale=en?country_id=49 instead of
api/states?locale=en&country_id=49