4.21.1
deps: qs@6.5.0
Fix routing requests without method
Ignore Object.prototype values in settings through app.set/app.get
Add express.text to parse bodies into string
Fix typo in res.is JSDoc
Deprecate `"back"` magic string in redirects (#5935)
docs: add missing JSDoc param for parseExtendedQueryString
lint: remove deprecated String.prototype.substr