This release represents glTF 2.0 spec coverage as it relates to what is possible to represent in Rhino. Things like Animation, Skinned Meshes, Morph Targets, Normal Maps, PBR, etc will not make it into this milestone. The focus of this milestone should be to have a robust geometry importer and exporter. Subsequent milestones will target the adaptation of other features. Extensions support will need to be looked at on a case by case basis. For example, it would be good to support Draco compression in this milestone.