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

scripts/tag/hide.js

@@ -0,0 +1,71 @@
+/**
+ * Butterfly
+ * @example
+ * hideInline
+ * {% hideInline content,display,bg,color %}
+ * content不能包含當引號，可用 '
+ * hideBlock
+ * {% hideBlock display,bg,color %}
+ * content
+ * {% endhideBlock %}
+ * hideToggle
+ * {% hideToggle display,bg,color %}
+ * content
+ * {% endhideToggle %}
+ */
+
+'use strict'
+
+function hideInline (args) {
+  args = args.join(' ').split(',')
+  const content = args[0]
+  const display = args[1] || 'Click'
+  const bg = args[2] || false
+  const color = args[3] || false
+  let group = 'style="'
+
+  if (bg) group += `background-color: ${bg};`
+  if (color) group += `color: ${color}`
+  group += '"'
+
+  return `<span class="hide-inline"><button type="button" class="hide-button button--animated" ${group}>${display}
+  </button><span class="hide-content">${content}</span></span>`
+}
+
+function hideBlock (args, content) {
+  args = args.join(' ').split(',')
+  const display = args[0] || 'Click'
+  const bg = args[1] || false
+  const color = args[2] || false
+  let group = 'style="'
+
+  if (bg) group += `background-color: ${bg};`
+  if (color) group += `color: ${color}`
+  group += '"'
+
+  return `<div class="hide-block"><button type="button" class="hide-button button--animated" ${group}>${display}
+    </button><span class="hide-content">${hexo.render.renderSync({ text: content, engine: 'markdown' })}</span></div>`
+}
+
+function hideToggle (args, content) {
+  args = args.join(' ').split(',')
+  const display = args[0]
+  const bg = args[1] || false
+  const color = args[2] || false
+  let group = 'style="'
+  let border = ''
+
+  if (bg) {
+    border = `style="border: 1px solid ${bg}"`
+    group += `background-color: ${bg};`
+  }
+  if (color) group += `color: ${color}`
+  group += '"'
+
+  return `<div class="hide-toggle" ${border}><div class="hide-button toggle-title" ${group}><i class="fas fa-caret-right fa-fw"></i><span>${display}</span></div>
+    <div class="hide-content">${hexo.render.renderSync({ text: content, engine: 'markdown' })}</div></div>`
+}
+
+hexo.extend.tag.register('hideInline', hideInline)
+hexo.extend.tag.register('hideBlock', hideBlock, { ends: true })
+hexo.extend.tag.register('hideToggle', hideToggle, { ends: true })