Moved retry API implementation out of extension to allow subclassing
Moved retry API implementation out of extension to allow subclassing

antigp/Alamofire,easyui/Alamofire,Alamofire/Alamofire,yimajo/Alamofire,antigp/Alamofire,easyui/Alamofire,yimajo/Alamofire,Alamofire/Alamofire