Update v.0.4

Update v.0.4

it's close to release, as of now, I've added some features including art and balancing difficulty if the game gets too hard.

• Coins that drop in the fields, hurts you when touched, but can also help you because they destroy carrots when touched
• New boss art, I call it "Bunchub Ultra"
• Say hello to the rat if you lose the boss fight and wish for less challenge. (he makes life easier)