Add sitemap, update

Gemfile

@@ -5,6 +5,7 @@ gem 'jekyll'
 
 group :default, :jekyll_plugins do
   gem 'jekyll-scholar', '~> 5.7'
+  gem 'jekyll-sitemap'
 end
 
 group :test do

Gemfile.lock

 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.7.1)
+    activesupport (5.0.0.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     addressable (2.4.0)
     bibtex-ruby (4.4.2)
@@ -18,6 +17,7 @@ GEM
     coderay (1.1.1)
     colorator (1.1.0)
     colored (1.2)
+    concurrent-ruby (1.0.2)
     csl (1.4.5)
       namae (~> 0.7)
     csl-styles (1.0.1.7)
@@ -26,8 +26,8 @@ GEM
       ffi (>= 1.3.0)
     ffi (1.9.14)
     forwardable-extended (2.6.0)
-    html-proofer (3.0.6)
-      activesupport (~> 4.2)
+    html-proofer (3.2.0)
+      activesupport (>= 4.2, < 6.0)
       addressable (~> 2.3)
       colored (~> 1.2)
       mercenary (~> 0.3.2)
@@ -48,14 +48,15 @@ GEM
       safe_yaml (~> 1.0)
     jekyll-sass-converter (1.4.0)
       sass (~> 3.4)
-    jekyll-scholar (5.8.3)
+    jekyll-scholar (5.8.4)
       bibtex-ruby (~> 4.0, >= 4.0.13)
       citeproc-ruby (~> 1.0)
       csl-styles (~> 1.0)
       jekyll (~> 3.0)
+    jekyll-sitemap (0.11.0)
+      addressable (~> 2.4.0)
     jekyll-watch (1.5.0)
       listen (~> 3.0, < 3.1)
-    json (1.8.3)
     kramdown (1.12.0)
     latex-decode (0.2.2)
       unicode (~> 0.4)
@@ -66,7 +67,7 @@ GEM
     mercenary (0.3.6)
     method_source (0.8.2)
     mini_portile2 (2.1.0)
-    minitest (5.9.0)
+    minitest (5.9.1)
     namae (0.11.0)
     nokogiri (1.6.8)
       mini_portile2 (~> 2.1.0)
@@ -102,8 +103,9 @@ DEPENDENCIES
   html-proofer (~> 3.0)
   jekyll
   jekyll-scholar (~> 5.7)
+  jekyll-sitemap
   pry
   rake
 
 BUNDLED WITH
-   1.13.0
+   1.13.1

_config.yml

@@ -3,7 +3,7 @@ subtitle: <a href="http://www.doc.ic.ac.uk">Department of Computing</a>, <a href
 copyright: Imperial College London
 
 baseurl: ""
-url: "http://psvg.doc.ic.ac.uk"
+url: "https://psvg.doc.ic.ac.uk"
 
 markdown: kramdown
 

robots.txt

+Sitemap: https://psvg.doc.ic.ac.uk/sitemap.xml