Game of Life rules

Implemented the rules of Game of Life:

• Each cell is either “dead” (black) or “alive” (white)
• If an alive cell has more than 3 alive neighbours it dies of crowding
• If an alive cell has less than 2 alive neighbours it dies of loneliness
• If a dead cell has exactly 3 alive neighbours it becomes alive

Each frame is then decided based on the state of the previous.
You can see some “glider” patterns emerging from the randomly generated soup!