Dihedral angle primitives for the RustUse geometry workspace.
`use-dihedral` wraps `use-angle` for angles between two half-planes or faces without attempting
polyhedral angle solving.
```rust
use use_dihedral::DihedralAngle;
let angle = DihedralAngle::from_degrees(90.0);
assert_eq!(angle.degrees(), 90.0);
```