Revised the way the heating and cooling works. The ship catalog contains now a rate of fire for each weapon. This is then translated in a heating - cooldown value which achieves this rate of fire. When the weapon overheats, the temperature turns red.
Some more works on the mods. Slots for each ships is now implemented but still needs some revisions. Still need to work on the mods to add new weapons.
Can now add new weapons as mod.