Support for Conway era
Added
- export of Conway-era keys (DReps, Constitutional Committee Hot and Cold keys)
- Conway era transaction body items (new certificates, voting procedures, treasury, donation)
- optional CBOR tag 258 in CDDL sets
- support for reduced features on Nano S (since Ledger app v7, due to memory limits)
Changed
- names of credential types (e.g. StakeCredentialParamsType -> CredentialParamsType)
- increased max. URL and DNS name length to 128