Notable Changes crypto: expose ECDH class #8188 http2: http2 is now exposed by default without the need for a flag #15685 a new environment variable NODE_NO_HTTP2 has been added to allow userland http2 to be required #15685 support has been added for generic Duplex streams #16269 module: resolve and instantiate loader pipeline hooks have been added to the ESM lifecycle #15445 zlib: CVE-2017-14919