title: How to do horizontal drag and replace
body: <p><strong>Use case description :</strong>
  I'm trying use drag and drop for a three columns to change their order (switch their position horizontally).
  I tried the first example in the <a href="https://valor-software.com/ng2-dragula/index.html" rel="nofollow noreferrer">demo page</a> , but in my case i only want to drag horizontally, my markup look like the following :</p>
  
  <pre><code>&lt;div class="horizontal segments" dragula="DRAGULA_FACTS"&gt;
  &lt;div class="column"&gt;content1&lt;/div&gt;
  &lt;div class="column"&gt;content2&lt;/div&gt;
  &lt;div class="column"&gt;content3&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>It does relatively work, but only for dragging from right to left, and not in the opposite way (left to right).
  Is there any way to achieve it ?</p>