This repo contains two branches ttdd & tcr that respectively demonstrate both approaches Timeboxed Test-Driven Development and Test && Commit || Revert. Both can can help you achieve Limbo & atomic changes.
You can watch a live coding session at AngularUp :
https://medium.com/@kentbeck_7670/limbo-scaling-software-collaboration-afd4f00db4b https://medium.com/@kentbeck_7670/test-commit-revert-870bbd756864