Support multiple buttons on start screen
Layout blocks in multiplayer mode
Add multiplayer paddles
Remove dead code for balls leaving a block by hitting walls (rather than instantly)
Multiplayer: balls bounce off the correct sides
Don't crash when a block is completed in multiplayer
Turn down trail in multiplayer
Don't use type for balls
Can lose in multiplayer
Paddle should always be visible
Refactor bounce code
More likely to draw
Can win by scoring goals
Move paddles inwards a bit
Keyboard control during multiplayer
Change color
Don't show mouse/keyboard toggle in multiplayer mode
Change play text in multiplayer mode