Forward props to underlying div element

I'm wanting to test that a line is drawn under a given scenario with React Testing Library and it seems "data-testid" is the only attribute I could use to select it. However, passing one to the `<LineTo  />` component doesn't seem to make it to the DOM. 

It would be nice if we could forward and spread any additional props passed in to the underlying `<div />` element that is the line.