Converted Experimental Chemical Weapon into a benefical sitrep - in hindsight there's not much way to counterplay it espeically at the early game, and is rare enough as a sitrep that it doesn't matter if it makes a mission easier for XCOM early on.

Fixed issue where Experimental Stimulants Withdrawal wasn't applying if a soldier evacuated from a mission. Yes this applied even on missions where you were supposed to evacuated. All fixed now though.

Fixed math error with Experimental Stims that was causing units to not actually get the injuries they were supposed to.

Experimental Chemical Weapon's effects should now instantly apply, and not slowly go through every unit that spawns in a mission.

Experimental Chemical Weapon is now inhibited from spawning on Abandoned plots or missions with "The Lost" sitrep.

Added safety check to Experimental Stims so it can't kill your soldiers after a mission's completed.