pry/pry — pull request #1034 by yui-knk (2013-12-08 05:14:02+00:00)
Title: lib/pry/pry_class.rb fix initialize bugs of Pry.config and Pry.history

In rare cases(issue #978) Pry.config is initialized to unintended Object. To fix this problem, check classes of Pry.config and Pry.history before initialize them.