Refactor `HTTP::Server` to bind to multiple addresses#5776

Merged

RX14 merged 7 commits intocrystal-lang:masterfrom straight-shoota:jm/feature/http-server-interfaces

Apr 17, 2018

+259-100

Commits on Apr 17, 2018

Add HTTP::Server.listening? and raise errors when running or closed
straight-shoota
committed