This release is mostly about fixing bugs, but it also features a few new cops.

Below is the list of all the gory details. Enjoy!

### New features

* [#639](https://github.com/rubocop/rubocop/issues/639): Support square bracket setters in `UselessSetterCall`. ([@yujinakayama][])
* [#835](https://github.com/rubocop/rubocop/issues/835): `UnneededCapitalW` cop does auto-correction. ([@sfeldon][])
* [#1092](https://github.com/rubocop/rubocop/issues/1092): New cop `DefEndAlignment` takes over responsibility for checking alignment of method definition `end`s from `EndAlignment`, and is configurable. ([@jonas054][])
* [#1145](https://github.com/rubocop/rubocop/issues/1145): New cop `ClassCheck` enforces consistent use of `is_a?` or `kind_of?`. ([@bbatsov][])
* [#1161](https://github.com/rubocop/rubocop/pull/1161): New cop `SpaceBeforeComma` detects spaces before a comma. ([@agrimm][])
* [#1161](https://github.com/rubocop/rubocop/pull/1161): New cop `SpaceBeforeSemicolon` detects spaces before a semicolon. ([@agrimm][])
* [#835](https://github.com/rubocop/rubocop/issues/835): New cop `UnneededPercentQ` checks for usage of the `%q`/`%Q` syntax when `''` or `""` would do. ([@jonas054][])
* [#977](https://github.com/rubocop/rubocop/issues/977): Add `AllowURI` option (enabled by default) to `LineLength` cop. ([@yujinakayama][])

### Changes

* Unused block local variables (`obj.each { |arg; this| }`) are now handled by `UnusedBlockArgument` cop instead of `UselessAssignment` cop. ([@yujinakayama][])
* [#1141](https://github.com/rubocop/rubocop/issues/1141): Clarify in the message from `TrailingComma` that a trailing comma is never allowed for lists where some items share a line. ([@jonas054][])

### Bugs fixed

* [#1133](https://github.com/rubocop/rubocop/issues/1133): Handle `reduce/inject` with no arguments in `EachWithObject`. ([@bbatsov][])
* [#1152](https://github.com/rubocop/rubocop/issues/1152): Handle `while/until` with no body in `Next`. ([@tamird][])
* Fix a false positive in `UselessSetterCall` for setter call on a local variable that contains a non-local object. ([@yujinakayama][])
* [#1158](https://github.com/rubocop/rubocop/issues/1158): Fix auto-correction of floating-point numbers. ([@bbatsov][])
* [#1159](https://github.com/rubocop/rubocop/issues/1159): Fix checking of `begin`..`end` structures, blocks, and parenthesized expressions in `IndentationWidth`. ([@jonas054][])
* [#1159](https://github.com/rubocop/rubocop/issues/1159): More rigid conditions for when `attr` is considered an offense. ([@jonas054][])
* [#1167](https://github.com/rubocop/rubocop/issues/1167): Fix handling of parameters spanning multiple lines in `TrailingComma`. ([@jonas054][])
* [#1169](https://github.com/rubocop/rubocop/issues/1169): Fix handling of ternary op conditions in `ParenthesesAroundCondition`. ([@bbatsov][])
* [#1147](https://github.com/rubocop/rubocop/issues/1147): WordArray checks arrays with special characters. ([@camilleldn][])
* Fix a false positive against `return` in a loop in `Next` cop. ([@yujinakayama][])
* [#1165](https://github.com/rubocop/rubocop/issues/1165): Support `rescue`/`else`/`ensure` bodies in `IndentationWidth`. ([@jonas054][])
* Fix false positive for aligned list of values after `when` in `IndentationWidth`. ([@jonas054][])

[@bbatsov]: https://github.com/bbatsov
[@jonas054]: https://github.com/jonas054
[@yujinakayama]: https://github.com/yujinakayama
[@dblock]: https://github.com/dblock
[@nevir]: https://github.com/nevir
[@daviddavis]: https://github.com/daviddavis
[@sds]: https://github.com/sds
[@fancyremarker]: https://github.com/fancyremarker
[@sinisterchipmunk]: https://github.com/sinisterchipmunk
[@vonTronje]: https://github.com/vonTronje
[@agrimm]: https://github.com/agrimm
[@pmenglund]: https://github.com/pmenglund
[@chulkilee]: https://github.com/chulkilee
[@codez]: https://github.com/codez
[@emou]: https://github.com/emou
[@skanev]: http://github.com/skanev
[@claco]: http://github.com/claco
[@rifraf]: http://github.com/rifraf
[@scottmatthewman]: https://github.com/scottmatthewman
[@ma2gedev]: http://github.com/ma2gedev
[@jeremyolliver]: https://github.com/jeremyolliver
[@hannestyden]: https://github.com/hannestyden
[@geniou]: https://github.com/geniou
[@jkogara]: https://github.com/jkogara
[@tmorris-fiksu]: https://github.com/tmorris-fiksu
[@mockdeep]: https://github.com/mockdeep
[@hiroponz]: https://github.com/hiroponz
[@tamird]: https://github.com/tamird
[@fshowalter]: https://github.com/fshowalter
[@cschramm]: https://github.com/cschramm
[@bquorning]: https://github.com/bquorning
[@bcobb]: https://github.com/bcobb
[@irrationalfab]: https://github.com/irrationalfab
[@tommeier]: https://github.com/tommeier
[@sfeldon]: https://github.com/sfeldon
[@biinari]: https://github.com/biinari
[@barunio]: https://github.com/barunio
[@molawson]: https://github.com/molawson
[@wndhydrnt]: https://github.com/wndhydrnt
[@ggilder]: https://github.com/ggilder
[@salbertson]: https://github.com/salbertson
[@camilleldn]: https://github.com/camilleldn
