code: function parse_href(href) {
    if (href.slice(0, 7) === 'mailto:') return href
  
    const index = href.indexOf('?')
    if (index === -1) throw new Error(`Got an <a> href from Google Docs we did not expect: ${href}`)
  
    const params = querystring.parse(href.substring(index + 1))
    if (!params.q) throw new Error(`This <a> href from Google Docs did not contain a 'q': ${href}`)
  
    return params.q
  }
docs: Returns the URL we want from the given <a>'s `href`.  Google Docs gives us something like https://www.google.com/url?q=http://whatis.techtarget.com/definition/absolute-link&amp;sa=D&amp;ust=1461346989252000&amp;usg=AFQjCNFFy1rqPkARlwWuYtcWV9C-AhRPSg ... which means we want http://whatis.techtarget.com/definition/absolute-link  TODO figure out the encoding mechanism. We know it isn't encodeURIComponent() because the slashes aren't `%2F`.