Lint/NestedMethodDefinition shouldn't flag singleton methods

[CyborgMaster]

I have the following method that dynamically creates a subclass

  def setup
    subclass = Class.new SimpleCommunicationSetting do
      def self.template
        {
          name: 'test',
        }
      end
    end
  end

which gets flagged with the following offense:

test/models/comm_engine/communication_settings/simple_communication_setting_test.rb:6:7: W: Lint/NestedMethodDefinition: Method definitions must not be nested. Use lambda instead.  (https://github.com/bbatsov/ruby-style-guide#no-nested-methods)
      def self.template
      ^^^^^^^^^^^^^^^^^

It appears that there should be a test for this: does not register offense for nested definition inside Class.new, but maybe the passed in superclass is confusing it?

RuboCop version

$ rubocop -V
0.37.2 (using Parser 2.3.0.5, running on ruby 2.2.2 x86_64-darwin14)

[segiddins]

I've got a fix for this I'll PR in a second

[CyborgMaster]

Thanks! You guys rock!

[CyborgMaster]

Sweet. May we please have a bugfix release to RubyGems?