title: Is it possible to extend quill to support a <br> inside of an <li>?
body: <p>I would like to be able to achieve something like the following in Quill:</p>
  
  <pre><code>&lt;ul&gt;
    &lt;li&gt;Something&lt;br&gt;
        Else
    &lt;/li&gt;
  &lt;/ul&gt;
  </code></pre>
  
  <p>Out of the box, Quill removes the br and does not support adding a br inside of an li with either insertText(..., '\n', ...) or user editing.</p>
  
  <p>I see how I can register a keyboard binding to handle, for example, "shift-enter" to be able to author content like this and it seems like both something that is possible to represent in Parchment and that there are the Blots to represent this in Quill (i.e Break, etc).</p>
  
  <p>All that said, it's not clear to me if this use case is possible in the Quill editor through a module or not.</p>
  
  <p>Any pointers would be super appreciated!</p>
  
  <p>Thanks!</p>