5.1.1
fix(#4460): refactor post escape (#4472)
fix(filter/highlight): avoid escaping curly bracket when highlight & prismjs are disabled (#4489)
refactor: var to let/const in test code
style: missing endline in .eslintrc (#4396)
test(benchmark): optimize for local & render post support (#4428)
remove(package): Remove no use packages
feat(benchmark): rewritten script (#4405)