message: use our Octicon with utility props
diff: import React from 'react'
  import PropTypes from 'prop-types'
  -import Octicon, {Package} from '@githubprimer/octicons-react'
  +import {Package} from '@githubprimer/octicons-react'
  import {NavLink} from 'react-router-dom'
  import {Styles} from './doc-components'
  +import Octicon from '../src/Octicon'
  import {Box, Link, Sticky, Text, UnderlineNav, UnderlineNavLink} from '../src'
  import {name, repository, version} from '../package.json'
  @@ -22,7 +23,7 @@ export default function Page({render}) {
  mb={3}
  actions={
  <Text color="gray.5" fontFamily="mono" px={4}>
  - <Octicon icon={Package} className="mr-2" />
  + <Octicon icon={Package} mr={2} />
  <Link href={releaseURL}>{pkg}</Link>
  </Text>
  }
  