* `bom merge` improved: the dependencies are reconstructed, i.e. all dependencies
that existed in the SBOMs before the merge should also exist after the merge.
* `bom convert` improved: we can now convert from and to CycloneDX XML.
* new command `bom validate` to do a simple validation whether a given SBOM
complies with the CycloneDX spec version 1.4, 1.5 or 1.6.
* `bom findsources`: programming language can be `golang` or `go`.
* support for the new CyCloneDX 1.6 external reference type `source-distribution`
when trying to find the source code for a component.
* Dependency updates.