• chi v4 requires Go 1.10.3+ (or Go 1.9.7+) - we have deprecated support for Go 1.7 and 1.8
• router: respond with 404 on router with no routes (#362)
• router: additional check to ensure wildcard is at the end of a url pattern (#333)
• middleware: deprecate use of http.CloseNotifier (#347)
• middleware: fix RedirectSlashes to include query params on redirect (#334)
• History of changes: see v3.3.4...v4.0.0