Added download progress tracking parameters to the UIImageView extension.
Added download progress tracking parameters to the UIImageView extension.

Alamofire/AlamofireImage,daniele-pizziconi/AlamofireImage,daniele-pizziconi/AlamofireImage,Baza207/AlamofireImage,sessuru/AlamofireImage,Pluto-tv/AlamofireImage,Pluto-tv/AlamofireImage,Baza207/AlamofireImage,sessuru/AlamofireImage,Alamofire/AlamofireImage