draft-ietf-oauth-identity-chaining-06

-06

• Use IANA.media-types so the tooling can find the media types registry without an explicit target
• Mention that the RFC8693 token exchange is not strictly necessary, if trust domain A's platform provides other means to obtain a JWT authorization grant
• Better describe the trust relationship necessary (domain B has to trusts domain A to issue JWT authz grants and trust its signing key(s)) and mention that AS Metadata's jwks_uri can be used to obtain the verification keys for trust domain A
• add a note about agreeing on semantics etc. when transcribing claims
• Editorial fixes