message: spread space props on Donut
diff: @@ -51,7 +51,8 @@ Donut.propTypes = {
  // require elements, not mixed content: <Slice>, <title>, etc.
  children: PropTypes.oneOfType([PropTypes.element, PropTypes.arrayOf(PropTypes.element)]),
  data: PropTypes.objectOf(PropTypes.number),
  - size: PropTypes.number
  + size: PropTypes.number,
  + ...space.propTypes
  }
  const Slice = props => {
  