berkshelf 7.0.0

• chef 18.4.12 >= 13.6.52

• chef-config 18.4.12 >= 0

• cleanroom 1.0.0 ~> 1.0

• concurrent-ruby 1.3.1 ~> 1.0

• minitar 0.9 >= 0.6

• mixlib-archive 0.4.20 ~> 0.4

• mixlib-config 3.0.27 >= 2.2.5

• mixlib-shellout 2.4.4 ~> 2.0

• octokit 4.25.1 ~> 4.0

• retryable 2.0.4 ~> 2.0

• solve 4.0.4 ~> 4.0

• thor 0.19.1 < 0.19.2, ~> 0.19