max / quasi

Re-export Curve, so Field::curve is callable from outside the crate `Field::curve` has been public since the curve entered the vocabulary, and the only type it accepts was not in lib.rs's `pub use` list. A consumer holding a `Field` could not name `Curve`, which made the method uncallable outside quasi-router; audiofiles' classifier port hit it as a compile failure and worked around it with `.step("0.01")` and the default linear curve. Swept the rest of the public surface for the same shape rather than fixing only the one found by calling it. Every other type named in a public signature is either re-exported already or reached through `layout::`, which lib.rs re-exports whole: Awaiting, Depth, Fallback, FieldKind, Image, Region, RowPart and Width are all makeover-layout's. Curve was the only gap. The test lives in tests/ rather than beside the code because a unit test cannot see this: inside the crate every type is reachable through `crate::`, so a missing re-export only shows up once something outside does the `use`. That is the first integration test the crate has.