mojombo/jekyll — pull request #1550 by Irio (2013-09-14 15:08:06+00:00)
Title: Remove Ruby 1.8.7 support

Ruby 1.8.7 is already retired and it isn't receiving security patches anymore.
https://www.ruby-lang.org/en/news/2013/06/30/we-retire-1-8-7/

This will allow [update redcarpet](https://github.com/mojombo/jekyll/pull/1549).