0.4.0

Added

• A model can now be shown from a camera its own author placed. Many .gltf and .glb
  files carry cameras — the section, the entrance, the angle whoever built the model
  considered the right one — and until now the plugin ignored them. view: camera:<name>
  in the block starts there: position, direction and field of view come straight out of the
  file, and from that point you orbit, zoom and pan as usual, turning around the point that
  camera looks at rather than the middle of the model, so a camera that frames a detail
  keeps its detail. The name is looked up in the file, not in the loaded scene — worth
  knowing, because the two are not the same: three.js rewrites names while loading and turns
  Schnitt A into Schnitt_A, so a name with a space would otherwise be unreachable. The
  raw glTF is searched instead, node names first and camera names second, without regard to
  case. A name that is not there, a file with no cameras at all, an orthographic camera (the
  viewport is perspective) or a view: camera:… on an STL is reported below the viewport,
  and the model is fitted as usual so that it stays visible. Save view is unchanged and
  still writes numbers, so pressing it replaces the reference with the angle you are looking
  from at that moment.

• Metallic models are no longer black. A metallic surface needs an environment to
  reflect; without one there is nothing to see. glTF gives metallicFactor a default of
  1.0, so a material that only sets a base colour — the most common case in hand-written
  and tool-written files alike — was rendered as polished metal with nothing around it.
  The viewport now provides that environment.

• New setting "Lighting" with three states: Faithful colors (the default; reflections
  on, and your theme's colours stay intact), High contrast (punchier and more filmic,
  shifts theme colours somewhat), and Off (the previous behaviour). The default changes
  how existing notes look — that is deliberate, the old behaviour was the incorrect one.

• New setting "Model's own lights". Some 3D files bring their own lighting; the plugin
  now steps back and stops adding its own when they do. Set it to Ignore them for files
  whose lights are exported at unusable brightness.

• Models that come in several files now work. A .gltf usually keeps its geometry in
  a .bin beside it and its textures in a folder — the way every Blender export looks.
  Those files are now loaded from your vault, resolved relative to the model file. What
  the model asks for and your vault does not have is named below the viewport instead of
  quietly missing.

• New setting "Allow external resources" (off by default). A model may point at
  http(s) addresses; with the setting off, those are not fetched and are reported instead.
  Off by default because opening a note should not contact a server you did not choose.

• STL files that carry their own colours now show them. The theme colour still applies
  to STL files without colours of their own.

• Meshopt-compressed models now load (EXT_meshopt_compression, what gltfpack -cc
  produces). The README said this was impossible because the decoder needs a web worker —
  that is true of Draco, not of Meshopt: its decoder falls back to running in the main
  thread, and the WebAssembly it needs is embedded in the plugin, so nothing is fetched.
  Draco is still refused, and its message now names the way out instead of only the wall.

• A guide: writing a 3D model by hand. Builds a
  model as text inside a note, step by step, and teaches you to read any .gltf file along
  the way. Every example in it is loaded through the plugin's own loader on every commit,
  so it cannot quietly stop working.

Fixed

• The "discard unsaved edits" dialog had its buttons the wrong way round — the
  destructive choice sat on the left. Cancel is now on the left and the destructive
  action on the right, as everywhere else in Obsidian.