Change header prop type on Tab to accept elements and strings

[MarvDann]

We want to be able to pass a component to the header property of the Tab component so that we can edit the title.

Would this be as simple as changing this in the interface?
interface TabProps { id: string; header: string | object; ...
or would it need to be React.ElementType rather than object?

[markhepburn]

Hi @MarvDann , thanks for your interest. It has been a while since I've touched this, but that seems perfectly reasonable -- do you fancy putting together a PR? :)