chore(cargo): add keywords to Cargo.toml
chore(cargo): add keywords to Cargo.toml

mikedilger/hyper,rschulman/hyper,reem/hyper,youprofit/hyper,hyperium/hyper,servo/hyper,markuskobler/hyper,yazaddaruvala/hyper,erickt/hyper,huonw/hyper,nstoddard/hyper,tshepang/hyper,mre/hyper,hannobraun/hyper,fuchsnj/hyper,hannobraun/hyper,tshepang/hyper,nickgonzales/hyper,achanda/hyper,golddranks/hyper,peterhj/hyper,yazaddaruvala/hyper,Twey/hyper,ianks/hyper,manuel-woelker/hyper,mlalic/hyper,lame-nickname/hyper,softprops/hyper,Twey/hyper,markuskobler/hyper,markuskobler/hyper,steveklabnik/hyper,nickgonzales/hyper,hyperium/hyper,frewsxcv/hyper,bonifaido/hyper,Keats/hyper,tshepang/hyper,yangxingpping/hyper,fhahn/hyper,nstoddard/hyper,fengsp/hyper,pyfisch/hyper,bheesham/hyper,nickgonzales/hyper,hyperium/hyper,hannobraun/hyper,giftcards/hyper,TimNN/hyper,golddranks/hyper,jmmaranan/hyper,mneumann/hyper,mfeckie/hyper,sfackler/hyper,mitsuhiko/hyper,golddranks/hyper,Twey/hyper,mlalic/hyper,Keats/hyper,Ryman/hyper,clatour/hyper,tempbottle/hyper,Keats/hyper