title: Python "contractions" package does not work for some contractions
body: <p>I tried fixing contractions in a large number of text files using contractions package. It works good for most of cases, but fails in handling contraction like 's. Here is an example:</p>
  <pre><code>text = &quot;I'll give two examples. Lets have the first example: let's say someone's name. Second example: My name's Sam&quot;
  
  import contractions
  contractions.fix(text)
  </code></pre>
  <p>Output:</p>
  <pre><code>&quot;I will give two examples. Let Us have the first example: let us say someone is name. Second example: My name's Sam&quot;
  </code></pre>
  <p>The first 's is fixed but it is failed in properly fixing the second and the third ones. Any workable solutions (or packages) to fix this problem?</p>
  <p>An ideal output would be the below (or at least closer to the main string):</p>
  <pre><code>&quot;I will give two examples. Let us have the first example: let us say someone's name. Second example: My name is Sam&quot;
  </code></pre>