9. Allow the user to specify which paddle they want to control, in multi-player mode.
10. Try to make the ball go between screens.
11. Change the networking code, so that a single server can connect two clients with each other. The server should provide player 1 with a code, and player 2 can connect with player 1 using that code (essentially like a room).
12. Add a --help option, that displays information about the game and how to run it.
