Merge upstream

landing.bryanroessler.com/_includes/comments.html

@@ -1,6 +1,8 @@
-{% if page.comments %}        
+{% if page.comments %}
   {% include disqus.html %}
   {% include fb-comment.html %}
   {% include staticman-comments.html %}
   {% include utterances-comment.html %}
-{% endif %}
+  {% include giscus-comment.html %}
+  {% include commentbox.html %}
+{% endif %}