Python: A rectangle is axis-aligned if its sides are parallel to
the coordinate axes. An axis-aligned rectangle will be defined by
its bottom left corner (x,y), its (nonnegative) width w, and its
(nonnegative) height h. The Cartesian coordinates (x,y) behave in
the normal mathematical way: increasing x moves right, increasing y
moves up. (In future, we will see situations where different
conventions are used.)
Write the function rOverlap that tests whether 2 axis-aligned
rectangles overlap. rOverlap takes 8 floats (x1,y1,w1,y1...