title: Use Intl.NumberFormat without rounding
body: <p>I'm using <code>Intl.NumberFormat</code> to format numbers:</p>
  <pre class="lang-js prettyprint-override"><code>const formatter = new Intl.NumberFormat('en-US', {
      minimumFractionDigits: 1,
      maximumFractionDigits: 4,
      minimumSignificantDigits: 1,
      maximumSignificantDigits: 4
    })
  
  formatter.format(0.99999) // results: '1'. desired result: '0.9999'
  formatter.format(0.006393555) // results: '0.006394'. desired result: '0.006393'
  formatter.format(0.9972620384752073) // results: '0.9973'. desired result: '0.9972'
  formatter.format(12345.67) // results: '12,350'. desired result: '12,345.67'
  formatter.format(200001) // results: '200,000'. desired result: '200,001'
  </code></pre>
  <p>As you can see the numbers are being rounded automatically, which is undesirable behavior in my case.</p>
  <p>Is there a way to tell the formatter not to round?
  I Didn't <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/NumberFormat" rel="noreferrer">found any option</a> or combination of options to achieve that.</p>