Copernicus 1.01.1

Small polish update.

• Horned timer widget: stops when the round ends (all enemies gone, or the last enemy runs off) and shows ROUND ENDED instead of carrying on.
• CASUAL mode: the SHORT HOP option is now called EASY SHORT HOP, to make clear it's an assist.
• Pause menu (CASUAL): LOSE A LIFE now appears only while you're actually playing: not at READY, nor during a round clear or a death.

As before, bring your own game data (the arcade ROM set or the X68000 disk): see data/README.txt.