v0.10

Gameplay:

• New map feature: 4 distinct magical stones, static objects on the ground that
  have a special effect when a creature is hurt while standing on them.
  Magical stones have only 1 charge. Some special levels can get more stones.
• New instable level: temporal walls can appear inadvertently.
• New fire shield: it can burn nearby foliage after a successful block.
• New potion of confusion: it confuses any monster in your line of sight.
• Rename ponderousness plates into turtle plates, and scintillating plates into
  shiny plates (shorter).

User Interface:

• Many grammar fixes (by kilobyte).
• No more need to refresh the page to play again in the browser version.
• Change the color of some statuses when they are about to expire.
• Avoid clash between browser and Boohu keys when the canvas is focused.