Version 0.2.3 comes with a number of updates:

• New Enemies: The Fly, Tornado (Air) and Piggy
• Enemies will now flash when hitted and leave a blood/water/slime stain when killed
• Better collision detection, expecially for flying enemies
• (Hopefully) better controller support
• Some minor global improvements

Beside from some minor bug fixes, next update will be a major one with changes to game mechanic.

Stay tuned ;)