Biotronic/TweakScale is licensed under the:
Creative Commons Attribution-NonCommercial-ShareAlike license

ShareAlike.
In addition to the conditions in Section 3(a), if You Share Adapted Material You produce, the following conditions also apply.
The Adapter’s License You apply must be a Creative Commons license with the same License Elements, this version or later, or a BY-NC-SA Compatible License.
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This would make the pellinor0/TweakScale also under CC-BY-NC-SA.

This repo was forked from pellinor0/TweakScale and classifies it as a derivative, making it under the CC-BY-NC-SA license.

Thanks.