## [3.8.0 Minor release - Replaces NSURLConnection (deprecated) with NSURLSession - on May 8th, 2016](https://github.com/rs/SDWebImage/releases/tag/3.8.0)
#### Infrastructure:
- Had to update the iOS deployment target to 7.0 from 5 - 6545a3a
#### Features:
- Replace deprecated `NSURLConnection` with `NSURLSession`#1578 - fixes #1291#1318#823#1566#1515
- Allow to customise cache and image downloader instances used with `SDWebImageManager` 86fc47bf7b - fixes #1398#870
#### Fixes:
- Removed the URL query params from the filename (key) fb0cdb6d - fixes #1433#1533
- Fixed the WebP build with the official 1.0.0 CocoaPods release f1a471e - fixes #1444
- Updated doc: `removeImageForKey:` not synchronous e6e5c51 - fixes #1379#1415
## [3.7.6 Patch release for 3.7.0 on May 8th, 2016](https://github.com/rs/SDWebImage/releases/tag/3.7.6)
#### Infrastructure:
- Changed the **libwebp git url** so that people from China can access it - #1390 (from `https://chromium.googlesource.com/webm/libwebp` to `https://github.com/webmproject/libwebp`)
#### Features:
- Added `cancelAllDownloads` method to `SDWebImageDownloader`#1504
- Added API to save image `NSData` to disk cache: `[SDImageCache storeImageDataToDisk:forKey:]`#1453
#### Fixes:
- Fix #1449: Version 3.7.5 breaks semantic versioning (removes public API). Re-added `sd_setImageWithPreviousCachedImageWithURL:andPlaceholderImage:options:progress:completed:` and deprecated it. Will remove it in 4.0.0 b40124c
## [3.7.5 Patch release for 3.7.0 on Jan 21st, 2016](https://github.com/rs/SDWebImage/releases/tag/3.7.5)
- fixed #1425 and #1426 - Continuation of Fix #1366, addresses #1350 and reverts a part of #1221 - from commit 6406d8e, the wrong usage of `dispatch_apply`
- fixed #1422 - Added a fallback for #976 so that if there are images saved with the old format (no extension), they can still be loaded
-#1348 Create a strong ref of weakOperation in the entry of The image download subOperation, use the strong ref instead weakOperation. At the same time, repair some logic of the 'If cancelled'
- dcb7985 replaces #1345 - Load local credential file
-#1323 don't to perform download if url is "" but not nil
-#1310 Added support for SDWebImageAvoidAutoSetImage option to UIButton and highlighted UIImageView categories
-#1308 Added Swift installation tips
- 32923fa Xcode 7.1 updates
-#1297 cleaner implementation of failedUrl error handling - fixes #1275
## [3.7.3 Patch release for 3.7.0 with iOS8+ framework and Carthage on Jun 13th, 2015](https://github.com/rs/SDWebImage/releases/tag/3.7.3)
- Adds support for **iOS 8+ Framework and Carthage** [#1071](https://github.com/rs/SDWebImage/pull/1071) [#1081](https://github.com/rs/SDWebImage/pull/1081) [#1101](https://github.com/rs/SDWebImage/pull/1101)
- [Refactor] Use `NSMutableSet` for failed URLs' storage instead of array [#1076](https://github.com/rs/SDWebImage/pull/1076)
- Make a constant for the error domain [#1011](https://github.com/rs/SDWebImage/pull/1011)
- Bug fix: `Collection <__NSArrayM: > was mutated while being enumerated` [#985](https://github.com/rs/SDWebImage/pull/985)
- added `SDWebImageAvoidAutoSetImage` option to avoid automatic image addition in `UIImageView` and let developer to do it himself [#1188](https://github.com/rs/SDWebImage/pull/1188)
- Added support for custom disk cache folder with fall back for caches directory [#1153](https://github.com/rs/SDWebImage/pull/1153)
- Added some files to the workspace so they are easier to edit [8431481](https://github.com/rs/SDWebImage/commit/8431481)
- [Memory Issue] Clear `SDWebImagePrefetcher``progressBlock` when it has completed [#1017](https://github.com/rs/SDWebImage/pull/1017)
- avoid warning `<Error>: ImageIO: CGImageSourceCreateWithData data parameter is nil` if `imageData` is nil [88ee3c6](https://github.com/rs/SDWebImage/commit/88ee3c6) [#1018](https://github.com/rs/SDWebImage/pull/1018)
-`failedURLs` can be removed at the appropriate time [#1111](https://github.com/rs/SDWebImage/pull/1111)
- Purge `NSCache` on system memory notifications [#1143](https://github.com/rs/SDWebImage/pull/1143)
- Determines at runtime is `UIApplication` is available as per [#1082](https://github.com/rs/SDWebImage/issues/1082) [#1085](https://github.com/rs/SDWebImage/pull/1085)
- 404 image url was causing the test to fail [0e761f4](https://github.com/rs/SDWebImage/commit/0e761f4)
- Fix for transparency being lost in transformed images. [#1121](https://github.com/rs/SDWebImage/pull/1121)
- Add handling for additional error codes that shouldn't be considered a permanent failure [#1159](https://github.com/rs/SDWebImage/pull/1159)
- add webp accepted content type only if `WebP` enabled [#1178](https://github.com/rs/SDWebImage/pull/1178)
- fix `ImageIO: CGImageSourceCreateWithData` data parameter is nil [#1167](https://github.com/rs/SDWebImage/pull/1167)
- Applied patch for issue [#1074](https://github.com/rs/SDWebImage/issues/1074) SDWebImage residing in swift module breaks the debugger [#1138](https://github.com/rs/SDWebImage/pull/1138)
- Fixed URLs with trailing parameters get assigned an incorrect image scale value [#1157](https://github.com/rs/SDWebImage/issues/1157) [#1158](https://github.com/rs/SDWebImage/pull/1158)
- Add newline to avoid compiler warning in `WebImage.h` [#1199](https://github.com/rs/SDWebImage/pull/1199)
## [3.7.2 Updated patch release for 3.7.0 on Mar 17th, 2015](https://github.com/rs/SDWebImage/releases/tag/3.7.2)
- the code from `SDWebImageDownloaderOperation connection:didFailWithError:` should match the code from `connectionDidFinishLoading:`. This fixes [#872](https://github.com/rs/SDWebImage/issues/872) - [7f39e5e](https://github.com/rs/SDWebImage/commit/7f39e5e)
-`304 - Not Modified` HTTP status code handling - [#942](https://github.com/rs/SDWebImage/pull/942)
- Exposing `SDWebImageManager` instance from the `SDWebImagePrefetcher` class - [6c409cd](https://github.com/rs/SDWebImage/commit/6c409cd)
-`SDWebImageManager` uses the shared instance of `SDWebImageDownloader` - [0772019](https://github.com/rs/SDWebImage/commit/0772019)
- Refactor the cancel logic - [#771](https://github.com/rs/SDWebImage/pull/771) [6d01e80](https://github.com/rs/SDWebImage/commit/6d01e80) [23874cd](https://github.com/rs/SDWebImage/commit/23874cd) [a6f11b3](https://github.com/rs/SDWebImage/commit/a6f11b3)
- Added method `SDWebImageManager cachedImageExistsForURL:` to check if an image exists in either the disk OR the memory cache - [#644](https://github.com/rs/SDWebImage/pull/644)
- Added option to use the cached image instead of the placeholder for `UIImageView`. Replaces [#541](https://github.com/rs/SDWebImage/pull/541) - [#599](https://github.com/rs/SDWebImage/issues/599) [30f6726](https://github.com/rs/SDWebImage/commit/30f6726)
For consistency, added async methods in `SDWebImageManager``cachedImageExistsForURL:completion:` and `diskImageExistsForURL:completion:`
- Fixed race condition that causes cancellation of one download operation to stop a run loop that is now used for another download operation. Race is introduced through `performSelector:onThread:withObject:waitUntilDone:` - [#698](https://github.com/rs/SDWebImage/pull/698)
- Fixed race condition between operation cancelation and loading finish - [39db378](https://github.com/rs/SDWebImage/commit/39db378) [#621](https://github.com/rs/SDWebImage/pull/621) [#783](https://github.com/rs/SDWebImage/pull/783)
- Fixed race condition in SDWebImageManager if one operation is cancelled - [f080e38](https://github.com/rs/SDWebImage/commit/f080e38) [#699](https://github.com/rs/SDWebImage/pull/699)
- Fixed issue where cancelled operations aren't removed from `runningOperations` - [#68](https://github.com/rs/SDWebImage/issues/68)
- Should not add url to failedURLs when timeout, cancel and so on - [#766](https://github.com/rs/SDWebImage/pull/766) [#707](https://github.com/rs/SDWebImage/issues/707)
- Fixed potential *object mutated while being enumerated* crash - [#727](https://github.com/rs/SDWebImage/pull/727) [#728](https://github.com/rs/SDWebImage/pull/728) (revert a threading fix from [#727](https://github.com/rs/SDWebImage/pull/727))
- Fixed `NSURLConnection` response statusCode not valid (e.g. 404), downloader never stops its runloop and hangs the operation queue - [#735](https://github.com/rs/SDWebImage/pull/735)
- Fixed `SDWebImageRefreshCached` bug for large images - [#744](https://github.com/rs/SDWebImage/pull/744)
- Added proper handling for `SDWebImageDownloaderLowPriority` - [#713](https://github.com/rs/SDWebImage/issues/713) [#745](https://github.com/rs/SDWebImage/issues/745)
- Fixed fixing potential bug when sending a nil url for UIButton+WebCache - [#761](https://github.com/rs/SDWebImage/issues/761) [#763](https://github.com/rs/SDWebImage/pull/763)
- Fixed issue [#529](https://github.com/rs/SDWebImage/pull/529) - if the `cacheKeyFilter` was set, this was ignored when computing the `scaledImageForKey`. For most of the developers that did not set `cacheKeyFilter`, the code will work exactly the same - [eb91fdd](https://github.com/rs/SDWebImage/commit/eb91fdd)
- Returning error in setImage completedBlock if the url was nil. Added `dispatch_main_async_safe` macro - [#505](https://github.com/rs/SDWebImage/issues/505) [af3e4f8](https://github.com/rs/SDWebImage/commit/af3e4f8)
- Avoid premature completion of prefetcher if request fails - [#751](https://github.com/rs/SDWebImage/pull/751)
- Return nil from `SDScaledImageForKey` if the input image is nil - [#365](https://github.com/rs/SDWebImage/issues/365) [#750](https://github.com/rs/SDWebImage/pull/750)
- Do not load placeholder image if `SDWebImageDelayPlaceholder` option specified - [#780](https://github.com/rs/SDWebImage/pull/780)
- Make sure we call the `startPrefetchingAtIndex:` method from main queue - [#694](https://github.com/rs/SDWebImage/pull/694)
- Save image in cache before calling completion block - [#700](https://github.com/rs/SDWebImage/pull/700)
