bbatsov/rubocop — pull request #1121 by jonas054 (2014-05-29 13:55:24+00:00)
Title: [Fix #1075] More strict limits on when to require trailing comma

When `TrailingComma`:`EnforcedStyleForMultiline` is `comma`, we only report an offense for missing comma if each value in the list is on its own line, and the closing round/square/curly bracket is also on its own line (as opposed to sharing a line with the last value).