Hanoi Ziggurat is the classic Tower of Hanoi brain game in 3D graphics and Swipe controls. The purpose is to move
a pile of disks (a tower) on to another peg - largest at the bottom and smallest to the top. There are two rules: one,
you can move only one disk at a time, two a disk cannot be placed on top of a smaller one.
Fixes to IAP interrupted purchase flow.
Fixes to vertex normals.
Fixes to GUI and Score.