order book Installation: go get -u github.com/JetBlink/orderbook Quick Start Level2: https://github.com/JetBlink/orderbook/blob/master/level2/order_book_test.go Level3: https://github.com/JetBlink/orderbook/blob/master/level3/order_book_test.go demo: https://github.com/Kucoin/kucoin-level3-sdk