title: Python pywinauto search windows with partial title
body: <p>Is there any way to make <code>pywinauto</code> find a window just with a part of the title?</p>
  
  <p><strong>This is my code:</strong></p>
  
  <pre><code>import pywinauto
  
  pwa_app = pywinauto.application.Application()
  w_handle = pywinauto.findwindows.find_windows(title=u'Minitab Professional 5.1 64bit - 3333348.temp.project',
                                                class_name='Window')[0]
  </code></pre>
  
  <p>The problem is that the number before <code>temp.project</code> changes every time I open the software and because of that I cannot get <code>pywinauto</code> to find the right window.</p>