title: cut out part of a string
body: <p>Say, I have a string</p>
  
  <pre><code>"hello is it me you're looking for"
  </code></pre>
  
  <p>I want to cut part of this string out and return the new string, something like</p>
  
  <pre><code>s = string.cut(0,3);
  </code></pre>
  
  <p>s would now be equal to:</p>
  
  <pre><code>"lo is it me you're looking for"
  </code></pre>
  
  <p><strong>EDIT</strong>: It may not be from 0 to 3. It could be from 5 to 7.</p>
  
  <pre><code>s = string.cut(5,7);
  </code></pre>
  
  <p>would return</p>
  
  <pre><code>"hellos it me you're looking for"
  </code></pre>