Hello,
In the Github repository there seems to be only the “packaged” version.
I have not found source code anywere. Is this project open source?
Adding @MackeyK24 the unity master around here 
Correct the new version is packaged as a unity package… the Assets/[Babylon] folder will contain any sources except my WebGL Canvas Tools (With GLTF Serialization). This is provided as CanvasTools.dll
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