{% assign issue_num = page.title | remove: 'Issue #' %}
{% if include.custom-utm %}
    {% assign utm_params = include.indie_sponsor.custom-utm %}
{% else %}
    {% assign utm_params = "?utm_campaign=Swift_Weekly_Brief&utm_medium=email_web&utm_source=Swift_Weekly_Brief_" | append: issue_num %}
{% endif %}

<div class="alert alert-warning sponsor">
    <h4><a href="https://github.com/JohnSundell/IndieSupportWeeks">Indie Support Weeks</a> #IndieSupportWeeks</h4>
    <h4><a href="{{ include.link }}{{ utm_params }}" target="_blank">{{ include.heading }}</a></h4>
    {{ include.body | markdownify }}
    <p><small><a href="{{ include.link }}{{ utm_params }}" target="_blank">{{ include.displaylink }}</a></small></p>
</div>

Add support for Indie Support Weeks
Add support for Indie Support Weeks

cc @johnsundell
