What's Changed
* Add custom omegaconf resolvers by NeejWeej in https://github.com/Point72/ccflow/pull/30
* Pydantic validation of Narwhals types by ptomecek in https://github.com/Point72/ccflow/pull/33
* Remove PyArrowDataType and pandas pydantic wrappers. … by ptomecek in https://github.com/Point72/ccflow/pull/34
* Fix issue with validation of NullContext and added tests. Closes 32 by ptomecek in https://github.com/Point72/ccflow/pull/36
* Fix annotation adjustment for pipe unions. Closes 37 by ptomecek in https://github.com/Point72/ccflow/pull/38
* Add explanation of ccflow acronym to docs. Closes 6 by ptomecek in https://github.com/Point72/ccflow/pull/39
* Add cmd omegaconf resolver and tests for all resolvers by ptomecek in https://github.com/Point72/ccflow/pull/40
* Add narwhals result types by ptomecek in https://github.com/Point72/ccflow/pull/35
* Add extra validation around NarwhalsFrameResult and ArrowResult by ptomecek in https://github.com/Point72/ccflow/pull/41
* Implement TPCH queries as an example of using ccflow by ptomecek in https://github.com/Point72/ccflow/pull/42
* Use Narwhals to clean up more validation at the ArrowTable type level by ptomecek in https://github.com/Point72/ccflow/pull/43
* Update ruff requirement from <0.9,>=0.6 to >=0.6,<0.10 by dependabot in https://github.com/Point72/ccflow/pull/44
* Add df property to ArrowTableResult for duck-type compatibility with NarwhalsDataFrameResult by ptomecek in https://github.com/Point72/ccflow/pull/45
* Add FallbackEvaluator to handle evaluator failures by ptomecek in https://github.com/Point72/ccflow/pull/47
* Defer build to reduce import time by NeejWeej in https://github.com/Point72/ccflow/pull/51
* Add warning for common misspellings of _target_ by ptomecek in https://github.com/Point72/ccflow/pull/52
* Fix 49. Make sure to use right context when raising unresolved model exception during registry load. by ptomecek in https://github.com/Point72/ccflow/pull/50
* Misc formatting and typos fixes by timkpaine in https://github.com/Point72/ccflow/pull/48
* Add polars log formatter for tabular results. by ptomecek in https://github.com/Point72/ccflow/pull/53
* Allow support for validation of ArrowSchema external type. Closes 54 by feussy in https://github.com/Point72/ccflow/pull/55
New Contributors
* NeejWeej made their first contribution in https://github.com/Point72/ccflow/pull/30
* feussy made their first contribution in https://github.com/Point72/ccflow/pull/55
**Full Changelog**: https://github.com/Point72/ccflow/compare/v0.4.1...v0.5.0