title: Supertab shall not be used on my abbreviation settings
body: <p>I have installed <a href="https://github.com/ervandew/supertab" rel="nofollow noreferrer">Supertab</a> in vim. Now I face the circumstance that my abbreviations does not work as normal. Which would be: I write the abbreviation <code>atn</code> and it expands to <code>@todo-next</code>. Now I have to hit <code>Tab</code> and <code>Enter</code>, so that the expandation works. </p>
  
  <p>How can I get the iab work as before?</p>
  
  <p>Here an extract of my abbreviations.</p>
  
  <pre><code># :iab
  i atn @todo-next
  i ato @todo 
  </code></pre>