message: add aria-current
diff: @@ -52,7 +52,8 @@ Breadcrumb.Wrapper = styled.li`
  Breadcrumb.Item = styled.a.attrs(props => ({
  activeClassName: typeof props.to === 'string' ? 'selected' : '',
  - className: classnames(props.selected && SELECTED_CLASS, props.className)
  + className: classnames(props.selected && SELECTED_CLASS, props.className),
  + 'aria-current': props.selected ? 'page' : null
  }))`
  display: inline-block;
  font-size: ${get('fontSizes.0')};
  