added prisms allowing to change laser beam colors

version change

changed heavy laser sprite; added impact effects; Japanese translations

added another turret, fixed issue with turrets not working and fixed some beam drawing code again

Japanese translation update

minigun added, beam rendering bug fixed

removed unneeded logging

More Japanese translations.

fixed a huge bug that made lasers hit their targets indefintetly
added tesla gun
remade sniper rifle sprite

Added heavy laser turret and Japanese translation contributed by Proxyer.