0.2.4 update

FISH was at Glitch-Festa during last weekend on Curitiba-Brazil and I got the opportunity to see people playing it and gather some feedback. This version was balanced based on that feedback. 

Changes:

• Weapons rebalanced. Shotgun and Chaingun got a small buff.
• You can now shoot fruits to make them fall from trees!
• Stronger enemies drop more scales
• Some bug fixes related to the hook and saving