steipete/PSTCollectionView — pull request #222 by juolgon (2013-02-20 15:04:39+00:00)
Title: Add support for custom subclasses of PSTCollectionViewLayoutAttributes

As seen in Apple documentation:
http://developer.apple.com/library/ios/#documentation/uikit/reference/UICollectionViewLayout_class/Reference/Reference.html#//apple_ref/occ/clm/UICollectionViewLayout/layoutAttributesClass