Minor changes that probably just broke saving
Revert "Minor changes that probably just broke saving"

This reverts commit 337e188e650cddc7e2ec0d322173df35ef8080db.
Last commit before seperating calculation functions into sepearte file
Moved computation functions out of main but now recieve "multiple definition" compiler error
Made mistake and removed plot from Makefile
Added plot back into Makefile
Added extern variables to header
Fixed errors in header guards
Added 4th cooldown data