Gas the meatbags race war now.

• Removes vox healing from nitrogen reagent.
• Made vox equivalents for Dexalin (Vexalin), Dexalin plus (Vexalin Plus), and Inaprovaline (Invaxovaline).
  • They're made the same as their meatbag counterpart except with nitrogen instead of oxygen.
  • Only work for vox, meatbags completely unaffected.
• Dex (plus) now kills vox properly.
• Adds a truly majestic shriek to vox, from paradise.

I need a changelog and get the wiki update ready. (when pomf wants to merge it.)