úΤ‚portableUnstable%Michael Snoyman <michael@snoyman.com>)Wrap json responses in a jsonp callback. #Basically, if the user requested a "text/ javascript" and supplied a  "callback"+ GET parameter, ask the application for an  " application/json"4 response, then convern that into a JSONP response,  having a content type of "text/ javascript" and calling the specified  callback function. hack-middleware-jsonp-0.0.1Hack.Middleware.Jsonpjsonp changeVal