Add over world sprite.
Set tile sheet's sprite.
Reference correct view controller.
Specify correct view controller.
Fix constraints.
Override -intrinsicContentSize.
Add an empty layer by default.
Set contentSize in view did layout.
Change number of fingers for scrolling.
Implement UIScrollViewDelegate for zooming.
Set zoom scales.
Enable editing on the map.
Set layer data.
Fix frames of stuff.
Use correct touch location.
Set active layer view.
Don't specify "copy". Gives wrong data type.
Disable inactive tinting for now.
Fix pixelation when scaling.
Add guards for map bounds.