[librecat-dev] Catmandu's license

[Hemme, Felix]

Heya, 

sorry if this has been asked before. We're currently creating lists of Open
Source tools that are used at our library and I wanted to add Catmandu to
that list. Then I noticed that there is no LICENSE file or any other
information about the license on
https://github.com/LibreCat/Catmandu/tree/main. Other parts/modules of the
Software are distributed under the GNU license, e.g.
https://github.com/LibreCat/Catmandu-OAI/tree/main  and
https://github.com/LibreCat/Catmandu-MARC/tree/master.

Is Catmandu Open Source software? What license is being used?

Thanks for any insights, best, Felix

Best regards,
Felix Hemme
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