Scope remaining features necessary to reach feature parity

[KendallWeihe]

We need to scope the remaining set of features necessary to be considered at "feature parity" with the other SDKs. It's going to be a bit of an art because there is no single SDK which is identical to the other, but we should be able to come to a consensus.

One way to consider the output of this work is to define a set of unit tests, a la test driven development.

This work may include redesigning existing features within this code repo.

cc @kirahsapong @nitro-neal

[KendallWeihe]

We could spend 40 hours on this ticket alone, but I don't think anyone wants to do that, so we I vote we settle for "good enough." For starters, I'll aggregate existing tickets, but this list is not to be considered comprehensive.

• Accept a JWT with None Properties instead of Default #202
• Add support for detached compact JWS #167
• Implement semantic VC verification rules #151 (open PR for this at implement vc verification #182)
• Implement semantic JWS verification rules #149
• Implement semantic JWT verification rules #148
• Key's should not be imported which have a key alias which pre-exists in the key manager #207
• Add vc credential status, schema and evidence #112
• Add did:dht method #105 (partially completed, WIP by @diehuxx)

Not necessary for "feature parity" but needed prior-to binding

• Consider standardizing all key representations to Jwk & remove PrivateKey, PublicKey, and Key traits #142
• Replace bearer_did+key_selector as the mechanism for signing with a Sign type #208

[KendallWeihe]

We'll need to account for #215 prior to being considered "feature parity" -- albeit if I'm understanding things correctly this is a divergence from most of our other SDKs, where peer dependencies run rampant, I think this is a divergence worthwhile because offloading version compatibility matching to the consumer developer seems like a non-starter to me.

[KendallWeihe]

This is still the active focus at this moment, but has evolved into broader design considerations