language: node_js
node_js:
  - "8"
  - "10"
  - "11"
  - "12"

install:
  - npm install

after_success: npm run coverage

language: node_js
node_js:
  - "8"
  - "10"
  - "11"
  - "12"
  - "13"

install:
  - npm install

after_success: npm run coverage

Add nodejs 13.x to test matrix
Add nodejs 13.x to test matrix