5.4.1
fix(migrator): fix help message
fix(codeblock): match whitespace but not newlines (#4625)
refactor: simplify code (#4138)
feat(helper): add `escape_html` (#4581)
feat(extend/injector): bring up new extend Injector (#4049)
chore(deps): update hexo-front-matter from 1.0.0 to 2.0.0 (#4439)
Fix js-yaml tags for v4.0.0+ (#4869) (#4876)
feat(highlight): parse 'caption' option to prismHighlight