v1.2.0 Release

New Features

• New
  • /contract/private/trade-fee-rate Support querying trade fee rate(KEYED)

Improvements

• Add constant API_URL_V2_PRO=https://api-cloud-v2.bitmart.com
• The ping/pong mechanism of the spot websocket has been modified to support ping text
• New spot ws client: CloudSpotWSClient
• New futures ws client: CloudFuturesWSClient