Updating Railties changelog

railties/CHANGELOG

+*Rails 3.2.0 (unreleased)*
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+* Removed old plugin generator (`rails generate plugin`) in favor of `rails plugin new` command. [Guillermo Iguaran]
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+* Removed old 'config.paths.app.controller' API in favor of 'config.paths["app/controller"]' API. [Guillermo Iguaran]
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+
 *Rails 3.1.0 (unreleased)*
 
 * Application and plugin generation run bundle install unless --skip-gemfile or --skip-bundle. [fxn]