v1.7.4 addresses a number of performance improvements (#544), bugs (#509, #535), and documentation improvements.

CHANGELOG

• Reduce allocations in (*routeRegexp).getURLQuery (#544) @klauspost
• Fixed golint warnings (#526) @KosToZyB
• fix headers regexp test case (#536) @icattlecoder
• Fix the CORSMethodMiddleware bug with subrouters (#535) @fharding1
• Remove/cleanup request context helpers (#525) @fharding1
• Guess the scheme if r.URL.Scheme is unset (#474) @euank
• Added capacity to slice creation, when capacity is known (#516) @vivekv96
• Modified http status codes, using constants provided by the http package (#514) @vivekv96
• bugfix/subrouter custom methodNotAllowed handler returning 404 (#509) (#510) @jonasdebeukelaer
• Update README (self-host logo) (#513) @elithrar
• Remove TravisCI badge (#503) @elithrar
• Add documentation for using mux to serve a SPA (#493) @fharding1
• Simplify code (#501) @muesli
• Avoid unnecessary conversion (#502) @muesli
• Update config.yml (#495) @elithrar