fix matrix vector multiplication operator for NURBS curve export #5
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Blender apparently uses a @ operator for vector matrix multiplication in blender version 3. This is needed when exporting NURBS curves
sources:
https://blender.stackexchange.com/questions/129473/typeerror-element-wise-multiplication-not-supported-between-matrix-and-vect
https://peps.python.org/pep-0465/