thoughtbot/shoulda-matchers — pull request #204 by hron (2012-12-10 12:19:53+00:00)
Title: Rewritten rspec integration to use RSpec's configure for matchers loading

I've tried to use RSpec.configure {|c| c.include ...} for loading shoulda matchers. This fixes random failures that are mentioned in #174. At least for my case. ;)