Show HN: Ip4.me/ip6.me API now shows X-Forwarded-For and RFC7239 headers

X-Forwarced-For and/or the newer RFC7239 Forwarded headers may show the local or public IP's behind a proxy or load balancer. This could be useful for some users, especially in dynamic environments. It can also be used to (sometimes) detect proxies you might not be aware of or to detect unwanted IP leakage.