first commit

layout/includes/mixins/article-sort.pug

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+mixin articleSort(posts)
+  .article-sort
+    - var year
+    - posts.each(function (article) {
+      - var tempYear = date(article.date, 'YYYY')
+      if tempYear !== year
+        - year = tempYear
+        .article-sort-item.year= year
+      .article-sort-item
+        time.article-sort-item__time= date(article.date)
+        a.article-sort-item__title(href=url_for(article.path))= article.title || 'No Title'
+    - })