aliases Date#sunday to Date#end_of_week, for symmetry with existing alias...

aliases Date#sunday to Date#end_of_week, for symmetry with existing alias Date#monday -> Date#beginning_of_week

activesupport/CHANGELOG

 *Rails 3.0.0 [beta 4/release candidate] (unreleased)*
 
+* Aliases Date#sunday to Date#end_of_week. [fxn]
+
 * Backports Date#>> from 1.9 so that calculations do the right thing around the calendar reform. [fxn]
 
 * Date#to_time handles properly years in the range 0..138. [fxn]

activesupport/lib/active_support/core_ext/date/calculations.rb

@@ -181,6 +181,7 @@ def end_of_week
     result = self + days_to_sunday.days
     self.acts_like?(:time) ? result.end_of_day : result
   end
+  alias :sunday :end_of_week
   alias :at_end_of_week :end_of_week
 
   # Returns a new Date/DateTime representing the start of the given day in next week (default is Monday).