@raphlinus noticed update to spiro, but not MIT :( hxSpiro was kind of a waste of my effort. At moment my trilateral library is rather brute force bezier to triangles I would like more useful. https://nanjizal.github.io/Xperimental/hxTrueTypeTrilateral/bin/indexWebGL.html …
MIT suggestions in regard to curves possibly within shaders?
If you're asking whether spiro might be relicensed to MIT / Apache 2, the answer is yes, probably. I'm not sure I understand the rest of your question.