title: Sequelize Default Exclude
body: <p>I have a table named <code>person</code>, I want a column to be excluded as default,</p>
  
  <pre><code>const Person = sequelize.define('person',{
    secretColumn: Sequelize.STRING,
    //... and other columns
  });
  </code></pre>
  
  <p>I see that there is a feature called <code>Scope</code> in Sequelize:
  <a href="http://docs.sequelizejs.com/manual/tutorial/scopes.html" rel="noreferrer">http://docs.sequelizejs.com/manual/tutorial/scopes.html</a></p>
  
  <p>I tried to exclude like this;</p>
  
  <pre><code>const Person = sequelize.define('person',{
    secretColumn: Sequelize.STRING,
    //... and other columns
  }, {
    defaultScope: {
      exclude: ['secretColumn']
    }
  });
  </code></pre>
  
  <p>But that does't work. Is there any other way to exclude a column by default?</p>