title: Sequelize - Rename column with index & constraint
body: <p>I want create migration with Sequelize to rename column with camelCase to have a database with column in snake_case.</p>
  <p>I use Sequelize to create migration and use migration.</p>
  <pre class="lang-js prettyprint-override"><code>module.exports = {
    up: function(queryInterface, Sequelize) {
        return queryInterface.renameColumn('my_some_table', 'totoId', 'toto_id');
    },
  
    down: function(queryInterface, Sequelize) {
        //
    }
  };
  </code></pre>
  <p>But... I have a unique constraint on this column (totoId) and name column, named <strong>my_some_table_name_totoId_uindex</strong>, and I also have  an index on this column (totoId).</p>
  <p>How I can force renaming column who have a unique constraint and one index?</p>