Get a Tornado >4.1.0 for working SNI in Thumbor [1,2,3,4].
[1]: https://tools.ietf.org/html/rfc6066#section-3
[2]: https://github.com/thumbor/thumbor/issues/409
[3]: https://github.com/tornadoweb/tornado/pull/1270
[4]: https://github.com/tornadoweb/tornado/commit/
ab706d692e83d146b2b8ecfc502414bc49cbdd01
AUTHOR="${AUTHOR:-W. Trevor King <wking@tremily.us>}"
NAMESPACE="${NAMESPACE:-$(id -u -n)}"
-DATE="${DATE:-20150402}"
+DATE="${DATE:-20160804}"
MIRROR="${MIRROR:-http://distfiles.gentoo.org/}"
ARCH_URL="${ARCH_URL:-${MIRROR}releases/amd64/autobuilds/${DATE}/}"
STAGE3="${STAGE3:-stage3-amd64-${DATE}.tar.bz2}"