Standardized UCP documents
Original change in https://github.com/ucoin-io/ucoin/issues/344
All is said in the original issue. So we now have:
- Identity
- Certification
- Revocation
- Membership
- Block
- Transaction
- Peer
With a shared header:
Version: VERSION
Type: DOCTYPE
Currency: CURRENCY
Also, each document either has a Issuer
or Issuers
field.