## Added
* Machines now emit soot. Soot collects in units of 4x4 chunks, and spreads into neighboring regions. High levels of soot cause visible smog.
* Gas artillery shells
  * Chlorine
  * Phosgene
  * Mustard gas

## Changed
* Mist now spawns cloud particles with the correct color instead of standard white
* HE artillery shells and rockets now turn blocks into slag

## Fixed
* Fixed the TOXIC trait not respecting protection when applying potion effects
* Fixed some armor recipes only accepting polymer and not bakelite