title: django-simple-history cannot import name error for model import in management command
body: <p>I am using django-simple-history for maintaining the history for each model. Now when I import the model in my management command it gives </p>
  
  <blockquote>
    <p>import error "cannot find import name 'ModelName'". </p>
  </blockquote>
  
  <p>Any Help regarding this.?</p>