convert a word to a list of chars
<p>I can split a sentence into individual words like so:</p>

<pre><code>string = 'This is a string, with words!'
string.split(" ")
['This', 'is', 'a', 'string,', 'with', 'words!']
</code></pre>

<p>But I don't know how to split a word into letters:</p>

<pre><code>word = "word"
word.split("")
</code></pre>

<p>Throws me an error. Ideally I want it to return ['w','o','r','d'] thats why the split argument is "". </p>
