…to handle 302 caching correctly See rs#326 (comment) for more info
…eshCached flag is used #326
…he` is passed #326
Even if the image is cached, fetch the URL again anyway. When set, NSURLCache is enabled in the downloader via the new option SDWebImageDownloaderEnableNSURLCache. NSURLCache will handle the protocol caching while SDWebImage remains useful for offline images. This option helps deal with images changing behind the same request URL, e.g. Facebook graph api profile pics where the request URL https://graph.facebook.com/[userid]/picture returns a redirect to the actual profile image. If a cached image exists, the completion block is called once with the cached image and again with the final image.
…ties" This reverts commit 12196f4. It adds alpha on JPEG with no alpha.