0.8.0 shipped format 16. Lineage names of a piece qualified by the faces around it, and sheet face names of a rim (rim.<edge>) or a bend end (rim.bend0/1), now come under format 17. Format 16 designs need no transformation, and the version stamp makes 0.8.0 ask for an update.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A design can define its own physical materials (material.create, material.edit, material.delete): name, density and an optional look. They work everywhere built-in materials do: assignment, mass properties, colours and configuration cells. Stored in user_materials, an additive field under format 16. Un-ignores the #554 regression test. Fixes#532.
Co-authored-by: jonaswre <jonas.wrede@beyondit.gmbh>
