message: Update vm images
diff: jobs:
  - job: Windows
  pool:
  - vmImage: VS2017-Win2016
  + vmImage: windows-latest
  steps:
  - template: job-steps.yml
  - job: Linux
  pool:
  - vmImage: ubuntu-16.04
  + vmImage: ubuntu-latest
  steps:
  - template: job-steps.yml
  - job: macOS
  pool:
  - vmImage: macOS 10.13
  + vmImage: macOS-latest
  steps:
  - template: job-steps.yml
  