The following files are provided by Kipti under CC-BY 4.0 LICENSE:
    models/block/med_simple_wheel.json
    models/block/simple_wheel.json
    models/block/simple_wheel_concept.json
    models/block/track_level_controller.json
    textures/block/med_tyre.png
    textures/block/rib.png
    textures/block/spring.png
    textures/block/suspension_controller.png
    textures/block/track_controller.aseprite
    textures/block/tyre.aseprite
    textures/item/kit/power_wrench.png
    textures/item/kit/stiff_tool.png
    textures/item/kit/stiff_tool.png
    textures/item/power_wrench_clean.png
    textures/item/track_kit.png
I (endalion) have made changes to some of these models for aesthetic and functional purposes.

All other files in this directory and ALL recursive subdirectories are under MIT LICENSE.