New update

Some gameplay improvements.

• Player is at the top of the screen
• Knights start at bottom
• Any hit knight becomes a statue
• Princess appears at random heights and applies Favors to any statues she encounters
• Knights finding Favors will immediately charge to the top of the screen before resuming normal activity
• Sheep (Need better idea for this) leave multiple statues in a vertical line
• Some very minimal scoring
• No levels or end yet
• Placeholder graphics only