3D geometric algebra library. Provides `Vector<T>`, `Bivector<T>`, `Rotor<T>`, `Point<T>`.
Depends on `scalars`, `inner-space`, `vector-basis`, `vector-space`, `derive_more` (optional `token-parser`, `data-stream`).
Feature parity with `ga2` (superset: adds `cross`, `rotate_bivector`, `Transform<Bivector>`). Currently has zero dependents.