Added: store last response for debugging use
Added: store last response for debugging use

Peardian/phpAmazonMWS,creacoon/amazon-mws-laravel,VincentWon/mws,kibokosrl/phpAmazonMWS,lapchenkovbyu/amazon-mws-laravel,CPIGroup/phpAmazonMWS,HMAZonderland/phpAmazonMWS