Hercules

New Features

• :feature:1 add did creation api.
• :feature:1 add did retrieve api using private key.
• :feature:2 add api to sign message .
• :feature:2 add api to verify message if signed by public address .
• :feature:3 add Did setting info api .
• :feature:3 add Did getting info from transaction .
• :feature:5 add asset transfer support.