dillon1000/react

Attack of the Clones!

This fixes some bugs with the clones and traversing backwards
through them. It is important that we maintain the correct parent
at all times and that clones have the correct values.

We need to carefully clone everything on the way up to the the
fiber with the next work to do.

This code is a bit messy and fragile now. I'm sure I didn't get it
all right but I want to get the basics in place first. Then we can
structure this part better. I think the general algorithm is sound
though.