documented workaround for frameworks that extend optional libraries
Added method to SDWebImageManager to check if an image exists in either the disk OR the memory cache
add category for imageView's highlighted state
Fixed issue where cancelled operations aren't removed from runningOperations
Create NSOperation when start operation.
Method getDiskCount returns NSUInteger.
Port Max's crash fix to my 3.6 fork
Merge pull request #694 from shifu/master

Port Max's crash fix to my 3.6 fork
Update SDWebImageDownloaderOperation.m

Fixing 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:
Merge pull request #698 from salling/master

Fixing race in SDWebImageDownloaderOperation leading to erroneous timeout.
Save image in cache before calling completion block
Merge pull request #700 from herrernst/master

Save image in cache before calling completion block
Overload -setImageWithURL to delay setting of placeholder image until after loading
Moved the delay placeholder flag to SDWebImageOptions
Updated bitwise operator to correctly find option if more than 1 are included
Wrapped placeholder check in parens to work with bitwise
Adds -[SDWebImageManager saveImageToCache:forURL:] method
fix duplicate symbols when using with webp via pods
Merge pull request #646 from Whirlwind/master

add category for imageView's highlighted state
Update projects to recommended settings
Improve logging and fix arm64 warnings when printing integers with %d