Adds neat slime stuff
Fixes chem reactions
Add's feedback, changes plasma usage.
Add's feedback, changes plasma usage.
Merge branch 'Slimes' of https://github.com/as334/-tg-station into Slimes

Conflicts:
	code/modules/mob/living/carbon/slime/slime.dm
Testing if git has unfucked.
Adds changelog
Fixed changelog
Merge pull request #6257 from as334/Slimes

Add's more stuff for Xenobiology and slimes