Deref for the Wide* types?

Could the `Wide*` types (`WideF32x4`, `WideBoolF32x4`, etc...) implement the [`Deref<Target=f32x*>` trait](https://doc.rust-lang.org/std/ops/trait.Deref.html)? That way the types would support [deref coercion](https://doc.rust-lang.org/std/ops/trait.Deref.html#deref-coercion) to their inner `wide` type and usage in a lot of context would be more ergonomic.
