Both internal and external organs are a mess, which is making
maintaining and updating them nasty, so I'm cleaning them up, this is
the first stage
mechanical and assisted internal organs are now an object type rather
than a var in the organ which makes it much cleaner and easier to adjust
removed duplicate list of internal organs as there's no reason to have
the same objects in 2 separate lists
made New() a lot cleaner and more robust
External organs will be next
c0f5132664