<head>

  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  {% feed_meta %}
  {% seo %}
  {% if site.twitter_username %}{% include head/twitter.html %}{% endif %}
  {% include head/stylesheets.html %}
  <script src="{{ '/assets/js/utils.js' | relative_url }}"></script>
  {% if jekyll.environment == 'production' and site.google.analytics %}
    {% include head/google-analytics.html %}
  {% endif %}
  {% if jekyll.environment == 'production' and site.google.adsense %}
    {% include head/google-adsense.html %}
  {% endif %}
  {% if site.content.head-s %}
    {% include head-suffix.html %}
  {% endif %}
  {% if site.content.head-suffix %}
    {% include {{ site.content.head-suffix }} %}
  {% endif %}
</head>