d8b96d5730
1.31.1 has security fix for CVE-2018-1000168: https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1/
1.31.1 has security fix for CVE-2018-1000168: https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1/