Workspace 0.5.0 → 0.6.0; inter-crate dep reqs 0.5 → 0.6. CHANGELOG
[0.6.0] covers GPU.13.0 (chunk-AABB outer-DDA early-out) + the
screen→world picking / voxel-query API (SceneRenderer::{pick,pick_depth,
pixel_ray,view_ray}, Scene::{raycast,resolve_voxel}, Grid::{voxel_solid,
voxel_color}, Vxl::voxel_color, Ray/PickHit/RayHit). Additive; no
public-API breakage vs 0.5.0.