**Warning:** This release introduce a non-backward compatible change: `call` blocks take closures as argument instead of function names. In practice, a function call like `call: f` must be replace by `call: ${f}`.
What's Changed
* The argument of `call:` is a closure, not a name by mandel in https://github.com/IBM/prompt-declaration-language/pull/242
* Initial OpenTelemetry support by esnible in https://github.com/IBM/prompt-declaration-language/pull/254
* Removed upper bound on LiteLLM version by vazirim in https://github.com/IBM/prompt-declaration-language/pull/255
* Add comments to examples to make them more obvious by esnible in https://github.com/IBM/prompt-declaration-language/pull/259
**Full Changelog**: https://github.com/IBM/prompt-declaration-language/compare/v0.1.1...v0.2.0