title: Parsing ISO 8601 like duration in Luxon
body: <p>I have duration string that looks like:</p>
  <pre><code>1:16.352
  </code></pre>
  <p>where <code>1</code> is minutes part, <code>16</code> is seconds part and <code>352</code> is millisecond part.</p>
  <p>I wanted to use <code>Duration.fromISOTime</code> but I get:</p>
  <pre><code>{
    &quot;reason&quot;: &quot;unparsable&quot;,
    &quot;explanation&quot;: &quot;the input \&quot;1:16.352\&quot; can't be parsed as ISO 8601&quot;
  }
  </code></pre>
  <p>Is there a clean way of parsing such duration in Luxon?</p>