oalders/http-browserdetect — pull request #76 by Perlover (2013-12-20 19:18:37+00:00)
Title: Added Yandex & Ahrefs bot machines

Hi,

Yandex is biggest Russian search engines. You have only yandeximages, but there is main bot - yandexbot

And the Ahrefs is ahrefs.com - biggest SE tool for webmasters with own ahrefs bot. They scans tons pages in internet...