machine:
  xcode:
    version: "8.3"

dependencies:
  override:
    - bin/setup

test:
  override:
    - bin/test

machine:
  xcode:
    version: "9.2"

dependencies:
  override:
    - bin/setup

test:
  override:
    - bin/test

Upgrade Xcode version on CI
Upgrade Xcode version on CI
