field image twig

field--image.html.twig

{# title wtf is this called label btw #}
{% if not label_hidden %}
  <h3 {{ title_attributes }}>{{ label }}:&nbsp;</h3>
{% endif %}



{% for delta, item in items %}
  {% if loop.length > 1 %} {# no wrappers if theres only 1 item#}
    <section class="images" {{ content_attributes }}>       {# wanna do a print all attributes but no class #}
  {% endif %}

  <figure class="image {{ cycle(["even", "odd"], delta) }}"{{ item_attributes[delta] }}>
    {{ item }}
    <figcaption>
      <pre>{{ dump(item.alt) }}</pre>
    </figcaption>


  </figure>

 {% if loop.length > 1 %}
    </section>
  {% endif %}
{% endfor %}

Related issues:
http://drupal.stackexchange.com/questions/97876/printing-field-item-attributes-with-twig-drupal-8
https://drupal.org/node/2160611