ludic/changes/render3d-outline.md

bump: minor type: feat ludic.render3d: a rim outline on an actor. An actor gains outline (metres of rim) and ocol (its colour). The pass draws the model again with its vertices pushed along their normals and its front faces culled, so only the far side of the swollen shell survives - a silhouette exactly outline wide, depth-tested against the scene, so anything standing in front of the actor hides its rim too.