What's Changed Implement pivot operation for EAV/measurement data transformation by @cmungall in https://github.com/linkml/linkml-map/pull/108 Relax dependency version constraints for library compatibility by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/109 Add markers and instructions to extract branches from long functions by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/105 offset implementation by @madanucd in https://github.com/linkml/linkml-map/pull/110 Fix known dependency vulnerabilities by @jackhiggs in https://github.com/linkml/linkml-map/pull/119 Allow multiple class_derivations for the same target class by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/118 Add uuid5() function to transformation expressions by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/117 Replace hand-rolled expression evaluator with simpleeval by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/122 Add multi-output stream writers and -O CLI option by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/115 Coerce numeric strings in comparison operators by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/135 NMDC: Document inlined-object flattening to lakehouse-style columns (tests only) by @turbomam in https://github.com/linkml/linkml-map/pull/130 NMDC: Document string/scalar-to-structured measurement transforms (tests only) by @turbomam in https://github.com/linkml/linkml-map/pull/131 Add cross-table lookup support for join-based transformations by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/136 Add NMDC transformation pattern tests (flattening + uuid5) by @turbomam in https://github.com/linkml/linkml-map/pull/145 Add NMDC Biosample-Study cross-table join tests (#136) by @turbomam in https://github.com/linkml/linkml-map/pull/148 Fix JSON output: omit null values and add trailing newline by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/149 Clarify architectural vision: TransformationSpecification as IR by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/153 Document expression language, functions, and multi-output for RC by @amc-corey-cox in https://github.com/linkml/linkml-map/pull/154 New Contributors @madanucd made their first contribution in https://github.com/linkml/linkml-map/pull/110 @jackhiggs made their first contribution in https://github.com/linkml/linkml-map/pull/119 Full Changelog: https://github.com/linkml/linkml-map/compare/v0.3.9...v0.4.0