title: Placing every character on a new line
body: <p>I have a file like this:</p>
  
  <pre><code>This is a sentence.
  This is another sentence.
  </code></pre>
  
  <p>I need to put a new line after each character, such that only one character appears on every line, e.g.:</p>
  
  <pre><code>T
  h
  i
  s
  
  i
  s
  
  a
  
  s
  e
  n
  t
  e
  n
  c
  e
  .
  T
  h
  i
  s
  
  i
  s
  
  a
  n
  o
  t
  h
  e
  r
  
  s
  e
  n
  t
  e
  n
  c
  e
  .
  </code></pre>
  
  <ul>
  <li>The file is in UTF-8 and contains many non-English characters.</li>
  <li>It does not matter if spaces or carriage returns have their own line.</li>
  </ul>
  
  <p>How can I remove every character to a new line?</p>