changes to T11 exam review and new Game of Life slides

• Converted exam review to LaTeX (more time consuming than I thought!), tweaked and changed a few of the questions.
• Added more exam advice and our initial findings from Assignment 3, Part 1.
• Added Conway's Game of Life slides

@scimed1 you're assigned to review this. Please look out for typos and any other things you can see. @smiths I'd also appreciate if you looked through the slides too, to make sure there's nothing you think should be changed, especially in the advice and description of assignment 4.