dillon1000/react

Add cloneElement Implementation

This is a new version of cloneWithProps but this one is moving out of
add-ons. Unlike cloneWithProps, this one doesn't have special logic for
style, className and children.

This one also preserves the original ref. This is critical when upgrading
from a mutative pattern where a child might have a ref on it.

It also preserves context, which is similar to how context would work when
it is parent based. It also ensures that we're compatible with the old
mutative pattern which makes updates easier.