title: Replace special characters with ASCII equivalent
body: <p>Is there any lib that can replace special characters to ASCII equivalents, like:</p>
  
  <pre><code>"Cześć"
  </code></pre>
  
  <p>to:</p>
  
  <pre><code>"Czesc"
  </code></pre>
  
  <p>I can of course create map:</p>
  
  <pre><code>{'ś':'s', 'ć': 'c'}
  </code></pre>
  
  <p>and use some replace function. But I don't want to hardcode all equivalents into my program, if there is some function that already does that.</p>