old_contents: import React from 'react'
  import Link from 'gatsby-link'
  
  import Menu from '../components/Menu'
  import icon from '../assets/external-link.svg'
  
  export default () => (
    <Menu>
      <li><Link to='/about'>About</Link></li>
      <li><Link to='/posts'>Posts</Link></li>
      <li><Link to='/talks'>Talks</Link></li>
      <li>
        <a href='https://github.com/ythecombinator/.space' target='_blank'>
          GitHub
        </a>
        <img id='external-link' src={icon} alt='External link icon' />
      </li>
    </Menu>
  )
  
new_contents: import React from 'react'
  import Link from 'gatsby-link'
  
  import Menu from '../components/Menu'
  import icon from '../assets/external-link.svg'
  
  export default () => (
    <Menu>
      <li><Link to='/about'>About</Link></li>
      <li><Link to='/posts'>Posts</Link></li>
      <li><Link to='/talks'>Talks</Link></li>
      <li>
        <a href='https://github.com/ythecombinator' target='_blank'>
          GitHub
        </a>
        <img id='external-link' src={icon} alt='External link icon' />
      </li>
      <li>
        <a href='https://twitter.com/ythecombinator' target='_blank'>
          Twitter
        </a>
        <img id='external-link' src={icon} alt='External link icon' />
      </li>
      <li>
        <a href='https://appear.in/ythecombinator' target='_blank'>
          Appear.in
        </a>
        <img id='external-link' src={icon} alt='External link icon' />
      </li>     
    </Menu>
  )
  
subject: add more social links