der: integrate Document type with yoke?

[tarcieri]

The yoke crate implements support for attaching zero-copy deserialized data types (i.e. ones with lifetimes that borrow from the original encoded data) to the data they're decoded from:

https://docs.rs/yoke/

The der::Document type provides backing storage for an ASN.1 DER-encoded document. It might be interesting to (optionally) integrate Yoke or a newtype thereof as a way to parse and cache a zero-copy data type which borrows from a Document.

[tarcieri]

Instead of trying to unify owned and ref types, we've ended up making types generic and splitting these use cases into two types.

Closing this.