Livestreamer 1.7.0 has been released on 2013-11-07. The current 1.6.1 ebuild in portage can be renamed; no ebuild changes needed. (I'm proxy-maint for this package.)
+ 09 Nov 2013; Tom Wijsman <TomWij@gentoo.org> +livestreamer-1.7.0.ebuild: + Version bump to 1.7.0, proxied commit for Nikos Chantziaras (realnc); fixes + bug #490824.