feat: 移除 katex copy-tex.css

feat: CDN可配置 cdnjs
feat: cdn可設置 version 和 custom format
feat: 點擊歸檔日期跳轉到頁面，標題顯示日期而不是‘歸檔’二字 closed #925
fix: Algolia搜索沒有結果 closed #923

scripts/events/comment.js

@@ -0,0 +1,14 @@
+/**
+ * Capitalize the first letter of comment name
+ */
+
+hexo.extend.filter.register('before_generate', () => {
+  const themeConfig = hexo.theme.config
+  let { use } = themeConfig.comments
+  if (!use) return
+  if (typeof use === 'string') {
+    use = use.split(',')
+  }
+  const newArray = use.map(item => item.toLowerCase().replace(/\b[a-z]/g, s => s.toUpperCase()))
+  themeConfig.comments.use = newArray
+})