feat: 不再支持 butterfly.yml 寫法

improvement: 文章頁標題改為h1(seo)
improvement: 改用hexo 內置的 injector 插入 inject 的代碼
improvement: canonical 改為hexo提供的函數生成
improvement: 優化手機toc 的特效和按鈕出現的時機
remove: 刪除搜索不必要的配置
remove: 移除豆瓣配置,如需配置，請使用 hexo-butterfly-douban
fix: 修復上一個版本導致的搜索按鈕在pjax下無法點擊的bugs close #387
fix: 修復上一個版本更新的toc z-index 過低的bugs

layout/includes/additional-js.pug

@@ -55,8 +55,6 @@ div
     else if (!is_post() && page.aside !== false)
       !=partial('includes/third-party/newest-comments/index', {}, {cache:theme.fragment_cache})
 
-  !=fragment_cache('injectBottom', function(){return injectHtml(theme.inject.bottom)})
-
   !=partial('includes/third-party/effect', {}, {cache:theme.fragment_cache})
 
   !=partial('includes/third-party/chat/index', {}, {cache:theme.fragment_cache})

layout/includes/head.pug

@@ -81,5 +81,3 @@ include ./head/noscript.pug
 
 !=partial('includes/head/darkmode', {}, {cache:theme.fragment_cache})
 
-!=fragment_cache('injectHead', function(){return injectHtml(theme.inject.head)})
-

layout/includes/header/index.pug

@@ -16,18 +16,6 @@ if page.top_img !== false
   else
     - var top_img = page.top_img || theme.default_top_img
 
-  if theme.douban
-    - var doubanExist = false
-    if is_current('/movies/', [strict])
-      - var top_img = theme.douban.movies_img !== false ? theme.douban.movies_img || theme.default_top_img : false
-      - doubanExist = true
-    else if is_current('/books/', [strict])
-      - var top_img = theme.douban.books_img !== false ? theme.douban.books_img || theme.default_top_img : false
-      - doubanExist = true
-    else if is_current('/games/', [strict])
-      - var top_img = theme.douban.games_img !== false ? theme.douban.games_img || theme.default_top_img : false
-      - doubanExist = true
-
   if top_img !== false
     - var imgSource = top_img && top_img.indexOf('/') !== -1 ? `background-image: url(${url_for(top_img)})` : `background: ${top_img}`
     - var bg_img = top_img ? imgSource : ''