title: Print loop within loop with Twig?
body: <p>I have nested content in a Twig array. I have months, each of which have days: </p>
  
  <p>In my page.twig:</p>
  
  <pre><code>{% set mock = {
    main_title: 'Main title',
    months:
      [
        {
          sub_title: 'Title 1',
          days: [
            {
              monday: 'Lorum',
              tuesday:  'Ipsum'
            }
          ]
        },
        {
          sub_title: 'Title 2',
          days: [
            {
              monday: 'Dolorem',
              tuesday:  'Neque'
            }
          ]
        }
      ]
    }
  %}
  
  {% include "component.twig" %}
  </code></pre>
  
  <p>I'm trying to print each month's sub title and the day text under it:</p>
  
  <pre><code>&lt;h2&gt;Title 1&lt;/h2&gt;
  &lt;h3&gt;Lorum&lt;/h3&gt;
  &lt;h3&gt;Ipsum&lt;/h3&gt;
  
  &lt;h2&gt;Title 2&lt;/h2&gt;
  &lt;h3&gt;Dolorem&lt;/h3&gt;
  &lt;h3&gt;Neque&lt;/h3&gt;
  </code></pre>
  
  <p>In component.twig:</p>
  
  <pre><code>{% for m in months %}
      &lt;h2&gt;{{ m.sub_title }}&lt;/h2&gt;
  
      {% for d in months.days %}
          &lt;h3&gt;Print test&lt;/h3&gt;
      {% endfor %}
  
  {% endfor %}
  </code></pre>
  
  <p>The month's sub_title in <code>&lt;h2&gt;</code> is printing fine but I can't even get the days in the months to loop correctly. </p>