title: LMDataLoader in fastai
body: <p>I'm trying to use LMDataloader in my nlp project but it always gives the following error</p>
  <pre><code>NameError: name 'LMDataLoader' is not defined
  </code></pre>
  <p>and is not importing either. Is it a version difference in Fastai and has it ben depreciated and if so what can I use instead.</p>