jakemarsh/JMImageCache — pull request #13 by jaminguy (2012-10-14 01:06:12+00:00)
Title: Move image loading to a background and fix potential retain cycle bug

I added some logic to move image loading to a background thread because is was blocking the main thread during large file loads from disk.

I also changed safeSelf to __weak instead of __block to avoid retain cycles under ARC since __block is no longer a weak reference under ARC.