language: node_js
node_js:
  - '8'
  - '6'
  - '4'
  - '0.12'
  - '0.10'

language: node_js
node_js:
  - '8'
  - '6'
  - '4'

Stop testing on older Node.js versions
Stop testing on older Node.js versions

Some sub-dependencies are dropping older Node.js versions without following semver and I don't have to energy to call them out on it.
