added Undo/Redo Test on initial Stack
added Undo/Redo Test on initial Stack

crr0004/lime,farhaanbukhsh/lime,crr0004/lime,crr0004/lime,farhaanbukhsh/lime,crr0004/lime,crr0004/lime,farhaanbukhsh/lime,farhaanbukhsh/lime,farhaanbukhsh/lime