Added the Plague Saw and Plague Blades abilities.

Added a panel for active abilities to the HUD.

Added a shared run timer.

Added One More Round: replay the same dungeon for tougher enemies and bigger rewards.

Added secret rooms with reward chests.

Added three new enemy types.

Added the Rat King boss.

Tuned enemies for the second dungeon.

Added cure quality: dishes can now come out Plain or Seasoned.

Health is now shown as hearts.