{% macro css(src, integrity = '', prefix = '') %}
  <link type="text/css" rel="stylesheet" href="{{ prefix }}{{ src }}"/>
  {# TODO: evaluate when to enable SRI, non-SSL connections cause issues #}
  {# {% if integrity %}
    <link type="text/css" rel="stylesheet" href="{{ prefix }}{{ src }}" integrity="{{ integrity }}" crossorigin="anonymous"/>
  {% else %}
    <link type="text/css" rel="stylesheet" href="{{ prefix }}{{ src }}"/>
  {% endif %} #}
{% endmacro %}

{% macro js(src, integrity = '', prefix = '') %}
    <script type="application/javascript" src="{{ prefix }}{{ src }}"></script>
  {# TODO: evaluate when to enable SRI, non-SSL connections cause issues #}
  {# {% if false %}
    <script type="application/javascript" src="{{ prefix }}{{ src }}" integrity="{{ integrity }}" crossorigin="anonymous"></script>
  {% else %}
    <script type="application/javascript" src="{{ prefix }}{{ src }}"></script>
  {% endif %} #}
{% endmacro %}