title: How to get rid of '\u0002', '\r\n', and '\u0003' from string?
body: <p>How to strip string to get clean <code>7A005AFA518B</code>? Now on init it returns bitstring and it seems that strip doesn't work for it. I've tried to use pattern matching to get string from start text unicode "\u0002" to end "\u0003" and then strip, but without success.</p>
  
  <pre><code>str = "\u00027A005AFA518B\r\n\u0003"
  String.codepoints(String.strip(str))
  [&lt;&lt;2&gt;&gt;, "7", "A", "0", "0", "5", "A", "F", "A", "5", "1", "8", "B", "\r", "\n",
   &lt;&lt;3&gt;&gt;]
  </code></pre>
  
  <p>I found that <code>String.split(str, "\r\n")</code> do this job but maybe is it cleaner way?</p>