0.0.2

This is the first post-challenge update. It mostly consist of tiny visual changes, but also includes a card info system and a new spell.

• Shift+click any card to display its description. Click anywhere to hide it.
• Execute spell was too situational, so now it's replaced with the more useful Vanish.
• Discard the avatar card to give up the current game.

The rest of the changes are purely visual and you won't probably notice them anyway :)