Smarter, Stronger and Faster!

A lot of small improvements:

• Increased dash distance;
• More HP to player;
• Enemies "nerfed";
• More invincibiliy frames to player;
• A new special Attack to player;
• Increased Jump height;
• Unique powerup menu (no repeated entries anymore);
• Speed of enemies's attacks were adjusted;
• Retry menu on game over screen;
• Movements can be cancelled by pressing Down (it will turn into a spin attack);
• Left click with the mouse will Attack;

(Also, I'm "cooking" a new Boss!)