rails/rails — pull request #11681 by gzohari (2013-07-31 11:11:06+00:00)
Title: Remove duplication from date_time calculations

Methods: `past?` and `future?` are already defined identically
in date_and_time/calculations.rb which is included in Date.
Because DateTime is a subclass of Date, it can call them.

/cc @pixeltrix