thoughtbot/shoulda-matchers — pull request #504 by mkaschenko (2014-04-20 08:24:16+00:00)
Title: Rename ensure_inclusion_of to validate_inclusion_of: deprecations

It's about https://github.com/thoughtbot/shoulda-matchers/issues/188
It may be related to https://github.com/thoughtbot/shoulda-matchers/pull/499