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# Versions & changelog


## Versioning

Our versioning policy follows the [Semantic Versioning specification](https://semver.org/). 
In our case, given a version `MAJOR.MINOR.PATCH`, we increment the:

* `MAJOR` version when the data model of the Graph changes
* `MINOR` version when the pipeline (e.g., different deduplication method, different implementation for an enrichment process) or major data sources change
* `PATCH` version when the graph data are updated


## Changelog

This section will document all notable changes for each graph version.


### v5.0.0

#### Added

- Impact indicators at the level of the [result instance](/data-model/entities/result#instance)

- New [relationship types](/data-model/relationships#relationship-types): `Reviews, IsReviewedBy, IsParentOf, IsChildOf, References, IsReferencedBy, IsNewVersionOf, IsPreviousVersionOf, HasVersion, IsVersionOf, Cites, IsCitedBy, IsVariantFormOf, IsOriginalFormOf, Obsoletes, IsObsoletedBy, IsContinuedBy, Continues, Documents, IsDocumentedBy, IsCompiledBy, Compiles, IsPartOf, HasPart, IsSourceOf, IsDerivedFrom, IsIdenticalTo`

#### Changed

- FOS and SDGs were removed from the [result subjects](/data-model/entities/result#subjects)