zold 0.6.4

• concurrent-ruby 1.0.5 = 1.0.5

• cucumber 1.3.17 = 1.3.17

• diffy 3.2.0 = 3.2.0

• openssl 2.0.1 = 2.0.1

• rainbow 3.1.1 ~> 3.0

• rake 12.0.0 = 12.0.0

• rubocop 0.52.1 ~> 0.52.0

• rubocop-rspec 1.5.1 = 1.5.1

• sinatra 2.0.8.1 ~> 2.0.1

• slop 4.10.1 ~> 4.4

• xcop 0.7.1 ~> 0.5