Changes with nginx 1.15.10 26 Mar 2019
*) Change: when using a hostname in the "listen" directive nginx now creates listening sockets for all addresses the hostname resolves to (previously, only the first address was used).
*) Feature: port ranges in the "listen" directive.
*) Feature: loading of SSL certificates and secret keys from variables.
*) Workaround: the $ssl_server_name variable might be empty when using OpenSSL 1.1.1.
*) Bugfix: nginx/Windows could not be built with Visual Studio 2015 or newer; the bug had appeared in 1.15.9.