title: numpy: create a 2d numpy array where each row is filled with strings from a regular array
body: <p>I have a regular list filled with strings of equal length:</p>
  
  <pre><code>['FADVAG', 'XXDXFA', 'GDXX..']
  </code></pre>
  
  <p>I want to transform it into a 2d numpy array, like the following:</p>
  
  <pre><code>[['F' 'A' 'D' 'V' 'A' 'G']
  ['X' 'X' 'D' 'X' 'F' 'A']
  ['G' 'D' 'X' 'X' '.' '.']]
  </code></pre>
  
  <p>How can I do that?</p>