Poöf Update

Hello everyone,

Thank you so much for playing Poöf and enjoying it !
Thank you also for all your feedbacks (positive and negative), very important to us.

Here are some new and fixed stuff about Poöf:
- The Steam Trading Cards are finally available since begginning of the week.
- The bugged achievements (Saws) are fixed.
- You were a lot to say the "Knife effect" (slowing movement when a knife hits an ennemy) was annoying. So we changed it. It still exists but it is a lot more discrete.
- Fixed crash in Leaderboard.
- Other minor fixes

Eggsplosion of love !
Neko and Arkedo