title: Sequelize Op.or within Op.and for nested operations
body: <p>I want to make the condition</p>
  <p>(A AND B) And (C Or D Or E Or F)</p>
  <p>When I try to do</p>
  <pre><code>where: {
    [Op.and]: [{
      A,
      B,
      [Op.or]: [{
          C,
          D,
          E,
          F
       }]
    }]
  }
  </code></pre>
  <p>This operation will just return A And B AND C AND D AND E AND F, for some reason Op.or just fails within Op.and. Maybe there is a better way to do the logical operation, would anyone know what do?</p>