Honk, honk!

Hello fellow geese. You were messing with the whole crossword and it was quite impossible to undo? Well, now it is. The changes are:

• Undo option
  Press CTRL + Z (button on android) and your mistakes are gone.
• Increased difficulty
  I'm not sure if it's cause I'm getting smarter or I added a better dictionary. But I'm getting higher scores. So now with increasing points the time bonus decreases.

Cheers,
Grau