title: Can I rollback using change_column method in Rails 4 and above?
body: <p>Is <code>change_column</code> method able to rollback when it is used in migrations in Rails 4 and above?</p>
  
  <p>Here is an example:</p>
  
  <pre><code>def change
    change_column etc
  end
  </code></pre>
  
  <p>Should I use <code>up</code> and <code>down</code> methods instead?</p>