* Add unit test to confirm that supplementary items must be contained within actual sections
* [ASLayoutInspecting] Deprecate collectionView:numberOfSectionsForSupplementaryNodeOfKind:
* Add another test to dig deeper into UICollectionView
* Move constrainedSizeForNodeAtIndexPath from the DataSource to the Delegate in ASCollectionView and ASPagerNode
* Fix ASPagerNode declaration of dataSource and delegate
As ASPagerDataSource does not inherit from ASCollectionDataSource it's not possible to declare it as property.
* Update comment
- Fix not using itemSize of UICollectionViewFlowLayout
- Move automatic constrained size calculation to the ASCollectionViewFlowLayoutInspector
- Provide a null layout inspector for throwing exceptions if a custom
UICollectionView is given but no ASCollectionViewLayoutInspecting
- Fix not checking for optional layout inspecting data source methods
are implemented or not
- Improving tests around ASCollectionViewLayoutInspecting
Unclear why the framework target required these seemingly unrelated changes to Collection
classes, but I modeled them after related files and it seems cleaner now (passes tests & framework target)
