Update sponsors

docs/_includes/elements/sponsor-item.html

@@ -0,0 +1,21 @@
+{% assign sponsor = site.data.sponsors.by_id[include.sponsor_id] %}
+{% assign sponsor_path = "sponsors/" | append: include.sponsor_id %}
+{% assign sponsor_alt = sponsor.name | append: " logo" %}
+
+<div class="{{ include.classname }}">
+  <a
+    href="{{ sponsor.url }}"
+    target="_blank"
+    rel="nofollow"
+    {% if sponsor.blend %}style="mix-blend-mode: multiply;"{% endif %}
+    >
+    {%
+      include elements/responsive-image.html
+      path=sponsor_path
+      extension="png"
+      alt=sponsor_alt
+      width=sponsor.width
+      height=sponsor.width
+    %}
+  </a>
+</div>