Mention nghttp2 use in changelog.
Mention nghttp2 use in changelog.

plucury/hyper,masaori335/hyper,fredthomsen/hyper,plucury/hyper,Lukasa/hyper,fredthomsen/hyper,irvind/hyper,lawnmowerlatte/hyper,masaori335/hyper,lawnmowerlatte/hyper,Lukasa/hyper,jdecuyper/hyper,irvind/hyper,jdecuyper/hyper