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Fix small typo in documentation
Small tweak the ConditionalGet documentation
Time#utc does not need to be called when passing the object to :last_modified since it is called internally to Rails.
cleanup of ActionController::Metal inline documentation
Rename RackConvenience => RackDelegation
Fixes expires_now and cleans things up a bit
Extract #head into its own module and simplify it
Add nagivational behavior to respond_with.
Rename /base to /metal and make base.rb and metal.rb top-level to ref…
…lect their module locations