fix(response): respond with a 500 if a handler panics
fix(response): respond with a 500 if a handler panics

Twey/hyper,nickgonzales/hyper,markuskobler/hyper,hyperium/hyper,Twey/hyper,Keats/hyper,markuskobler/hyper,jmmaranan/hyper,golddranks/hyper,Keats/hyper,yazaddaruvala/hyper,golddranks/hyper,markuskobler/hyper,golddranks/hyper,hyperium/hyper,mfeckie/hyper,fhahn/hyper,hannobraun/hyper,Twey/hyper,hannobraun/hyper,hannobraun/hyper,nickgonzales/hyper,fengsp/hyper,softprops/hyper,sfackler/hyper,tshepang/hyper,achanda/hyper,yazaddaruvala/hyper,tshepang/hyper,Keats/hyper,nickgonzales/hyper,tshepang/hyper,hyperium/hyper