message: add m + p utils to Link
diff: import React from 'react'
  import PropTypes from 'prop-types'
  import classnames from 'classnames'
  +import {mapWhitespaceProps} from './props'
  -export default function Link({children, className, muted, scheme, nounderline, ...rest}) {
  +export default function Link(props) {
  + const {children, className, muted, scheme, nounderline, ...rest} = mapWhitespaceProps(props)
  const colorClass = scheme ? `link-${scheme}` : muted ? 'muted-link' : 'text-blue'
  return (
  <a className={classnames(className, colorClass, nounderline && 'no-underline')} {...rest}>
  