A new take on YAML templating for configuration files

What this post added

Introduces ytt (YAML Templating Tool) v0.1.0, a new approach to YAML templating that is structure-aware rather than text-based. It uses YAML comments for annotations and Starlark for imperative operations, conditionals, loops, modularization, data injection, and validation. Compares ytt to Helm's text templating with examples of ingress YAML and helper functions. Mentions an 'overlay' feature for configuration management.