title: How to roll back migrations using Flyway?
body: <p>MyBatis migrations splits each SQL file into two sections:</p>
  
  <ol>
  <li>One for migrating forward one version</li>
  <li>One for migrating back one version</li>
  </ol>
  
  <p>How does one roll back versions using <a href="http://flywaydb.org">Flyway</a>?</p>