Hannah Troisi edf2b669ae [ASCollectionViewLayoutInspecting] make -scrollableDirections required (#2543)
* [ASCollectionViewLayoutInspecting] make -scrollableDirections a required method

* doh!

* fixed?

* add assert per @appleguy's comment

* use self.layoutInspector, add check at the start of didChangeBounds...
2016-11-09 13:48:16 +09:00
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