Get history of Ruby releases in 2013

gistfile1.rb

require 'nokogiri'
require 'open-uri'
news = Nokogiri::HTML(open("https://www.ruby-lang.org/en/news/2013/"))
news.xpath("//div[@class='post']/following-sibling::*").each do |item| 
  match = item.text.match /Ruby (\S+) is released.*Posted by.*on ((?:\d{1,2} [a-zA-z]{3} \d{4}))/m
  if match
    puts "Ruby #{match[1]} was announced on #{match[2]}"
  end
end

Ruby 2.1.0-rc1 was announced on 20 Dec 2013
Ruby 2.1.0-preview2 was announced on 22 Nov 2013
Ruby 1.9.3-p484 was announced on 22 Nov 2013
Ruby 2.0.0-p353 was announced on 22 Nov 2013
Ruby 2.1.0-preview1 was announced on 23 Sep 2013
Ruby 2.0.0-p247 was announced on 27 Jun 2013
Ruby 1.9.3-p448 was announced on 27 Jun 2013
Ruby 1.8.7-p374 was announced on 27 Jun 2013
Ruby 1.9.3-p429 was announced on 14 May 2013
Ruby 2.0.0-p195 was announced on 14 May 2013
Ruby 2.0.0-p0 was announced on 24 Feb 2013
Ruby 1.9.3-p392 was announced on 22 Feb 2013
Ruby 2.0.0-rc2 was announced on 8 Feb 2013
Ruby 1.9.3-p385 was announced on 6 Feb 2013
Ruby 1.9.3-p374 was announced on 17 Jan 2013