language: node_js
sudo: false

node_js:
  - "4"
  - "6"
  - "7"
  - "8"
  - "9"

cache:
  directories:
    - node_modules

notifications:
  email:
    on_success: never

language: node_js
sudo: false

node_js:
  - "6"
  - "7"
  - "8"
  - "9"
  - "10"

cache:
  directories:
    - node_modules

notifications:
  email:
    on_success: never

Remove Node 4 and add Node 10
tests: Remove Node 4 and add Node 10