todo

import - offset, scale, rotation


hierarchical
    - single layer gik throwing error on parse
    - origin
    - rotation
    - load composite materials
    - change bounding box
    - placement ui 3D

material transformations -> change material of a cell, change in bulk

rendering callbacks


highligher - check mode, do not add cells except in design/composite/material modes

part stl import and orientation  - settings to json
same for machine