5.2.0
refactor(box): remove Bluebird.asCallback (#4379)
docs(extend/helper): bring up jsdoc (#4503)
Merge pull request #4518 from curbengh/fm-disable-nunjucks
feat: bring up config.updated_option (#4278)
perf(external_link): faster regexp
chore(deps): update hexo-front-matter from 1.0.0 to 2.0.0 (#4439)