Add current year

source/layouts/layout.haml

@@ -18,7 +18,7 @@
       = link_to 'Back to index', '/' unless @index
     = yield
     .ui.container.footer
-      © 2020,
+      © 2020–#{config[:commit][:time].utc.strftime('%Y')},
       = link_to 'Anton Smirnov', 'https://sandfox.me/'
       %br
       This work is licensed under a