Simple SFML Wireworld cell automata simulation
- Press Space to stop/resume the simulation
 - Press or drag Right Mouse Button to place a cell
- Press 1 to select yellow mode
 - Press 2 to select blue mode
 - Press 3 to select red mode
 - Press 0 to select gray mode
 
 - Press Left Mouse Button to remove a cell
 - Drag Left Mouse Button to move around
 - Use the Mouse Wheel to zoom in or out.