wip: Upgrade to jekyll 4

_layouts/default.html

@@ -12,8 +12,8 @@
 {% if page.name != 'about.html' %}
             <div class="well well-sm small">
                 <div class="pull-left" id="about-well-image">
-                    <a href="{{ site_url }}/about/">
-                        <img src="{{'/images/profile.svg' | prepend: site.baseurl}}" alt="">
+                    <a href="{% link about.html %}">
+                        <img src="{% link images/profile.svg %}" alt="">
                     </a>
                 </div>
 {%     include about.html %}
@@ -99,7 +99,7 @@
 
                          break;
                      case 'about':
-                         location = '{{ site_url }}/about/';
+                         location = '{% link about.html %}';
 
                          break;
                      default: