[Metafacture] Metafacture 5.1.0 feature release

[Christoph, Pascal]

Hi everyone,

We just released a new feature release of Metafacture 5.

Probably most notably is the new multithreading feature. Also, as #marcmustdie,
we provide a MarcXmlEncoder - just in time ;)

Please refer to the release notes [1] for details. Any problems or questions
are best discussed on this mailing list or in an issue on Github [2].

As usual the release artifacts are available on the Central Repository [3]. The
Metafacture Runner Distribution is additionally available from the
GitHub Release page [1].

Cheers,
lobid Team

[1]
https://github.com/metafacture/metafacture-core/releases/tag/metafacture-core-5.1.0
[2] https://github.com/metafacture/metafacture-core/issues
[3] https://search.maven.org/search?q=g:org.metafacture