Fix a typo
Support named captures in UnusedLocalVariables and ShadowingOuterLocalVariable

This fixes #332.
Merge pull request #334 from yujinakayama/support-named-captures

Support named captures in UnusedLocalVariables and ShadowingOuterLocalVariable
skip ensure return check when ensure has no body
Merge pull request #333 from eitoball/skip_check_when_ensure_has_no_body

Skip ensure return check when ensure has no body
Make the preferred collection methods configurable

This fixes #328.
Fix state leak in Cop.all

Cop.all now returns a copy of the collection that holds all the cops.
This way modifications to it won't affect the global state.
Merge pull request #335 from edzhelyov/fix-leaky-state-of-cops-all

Fix state leak in Cop.all
add --list-cops opt to display cop names when listing offences
Merge branch 'master' of https://github.com/sabat/rubocop
Merge branch 'master' into list_cop_nam