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*SVN*
+* Added destruction of dependent objects in has_one associations when a new assignment happens #742 [mindel]. Example:
+
+ class Account < ActiveRecord::Base
+ has_one :credit_card, :dependent => true
+ end
+ class CreditCard < ActiveRecord::Base
+ belongs_to :account
+ end
+
+ account.credit_card # => returns existing credit card, lets say id = 12
+ account.credit_card = CreditCard.create("number" => "123")
+ account.save # => CC with id = 12 is destroyed
+
+
* Added validates_numericality_of #716 [skanthak/c.r.mcgrath]. Docuemntation:
Validates whether the value of the specified attribute is numeric by trying to convert it to