Bump hexo-theme-butterfly from 3.8.4 to 4.2.1

[dependabot]

Bumps hexo-theme-butterfly from 3.8.4 to 4.2.1.

Release notes

Sourced from hexo-theme-butterfly's releases.

4.2.1

Fix

1. CDN配置為 local 時 mathjax 字體缺失的 bug jerryc127/hexo-theme-butterfly#893

4.2.0

Breaking Change

1. waline 適配 V2

   CDN:
   -    waline: 
   +    waline_js:
   +    waline_css:

2. waline 的 visitor 改為 pageview

   waline:
   -  visitor: false
   +  pageview: false

3. cdn 可一鍵設置 本地文件/可單獨配置主題文件，第三方文件的 cdn

   CDN:
   +  # The CDN provider of internal scripts (主題內部 js 的 cdn 配置)
   +  # option: local/jsdelivr
   +  # Dev version cannot choose jsdelivr (dev版的主題不能設置為 jsdelivr)
   +  internal_provider: local
   +  # The CDN provider of third party scripts (第三方 js 的 cdn 配置)
   +  # option: local/jsdelivr
   +  # when set it to local, you need to install hexo-butterfly-extjs
   +  third_party_provider: jsdelivr
   +  option:

4. 移除 utterances，giscus， addtoany， busuanzi 的 cdn 配置

Feature

1. algolia 搜索增加文章內容顯示和高亮

2. 搜索內容顯示區域變大

3. 本地搜索增加 preload,cdn 配置 #859

... (truncated)

Commits

• 9479f8a Merge branch 'dev' of https://github.com/jerryc127/hexo-theme-butterfly into dev
• 793e004 fix: CDN配置為 local 時 mathjax 字體缺失的 bug close #893
• b3e5b7c Merge pull request #888 from kkfive/dev
• c2c199b perf: 调整本地搜索结果间距
• 3e30f30 update
• 5b1473c breaking changes: waline 適配 V2
• ec78f66 fix merge failed
• a33602e feat: 本地搜索增加preload,cdn 配置 closed #859
• ee3c143 Merge pull request #836 from Android-KitKat/fix-related-post
• 4461473 fix: 标题中带有 HTML 关键字时，会破坏相关推荐的渲染。
• Additional commits viewable in compare view

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[dependabot]

Superseded by #10.