New features

• feat: handle config.root is not exist @jiangtj [#4616]

Breaking change

• fix(excerpt): use span instead of anchor element for better SEO performance @stevenjoezhang [#4627]

Fixes

• fix(box): set property awaitWriteFinish for chokidar filewatcher @stevenjoezhang [#4633]
• fix(codeblock): match whitespace but not newlines @stevenjoezhang [#4625]
• fix(i18n): page.lang is undefined when using the key language in front-matter @stevenjoezhang [#4614]

Misc

• github: update actions/setup-node action to v2 @stevenjoezhang [#4604]
• chore/ci: migrate from probot/stale to GitHub Actions @stevenjoezhang [#4598]

Dependencies

• chore(deps): bump js-yaml from 3.14.1 to 4.0.0 @dependabot-preview [#4607]