Update 3.2.1

[h3]CHANGES:[/h3]

• Hovering over a shop item currently highlights slots that it can fit into with a green outline - now that outline will be red if a weapon mod is selected and its colour doesn't match any of the weapon's DNA letters.
  
• Also, instead of outlining every slot, only the one slot that it would actually go into for each mount will be outlined.
  
• The "MOD WILL DO NOTHING" warning will be more attention-grabbing (and say something different) if you try to add an incompatible mod to a weapon that can't gain any more DNA letters (in other words, you can't add a DNA letter to make the mod compatible later on).
  

[h3]FIXES:[/h3]

• Things that increase Damage dealt to shots fired at 0% Heat now work properly.
  
• The heal button in SHOP would sometimes be enabled even when at full Health.