tweaked bot behaviour and the TOW missile colours

increased the TOW missile range and changed the colour of the M40 barrel

slightly buffed the flechette damage

tweaked the turret rotation

slightly buffed the health to 1975

buffed the APERS and HEAT damage radius slightly

tweaked the TOW

nerfed the APERS round damage slightly

nerfed the fragmentation damage and radius

improved TOW missile handling