* Bugfix: Book Delta Conversion issue in backends * Bugfix: Tweak BitMEX rest API to handle more errors more gracefully * Feature: Deribit Exchange support * Feature: Instrument channel * Bugfix: support Kraken websocket API changes * Bugfix: correct USDT symbol mappings for Bitfinex * Bugfix: Fixed mongo book backend * Feature: Book delta support for mongo, sockets, ZMQ
0.23.0
Not secure
* Feature: Book delta support for InfluxDB * Feature: Swaps on OkEX
0.22.2
Not secure
* Bugfix: Fix tagging issue in InfluxDB * Bugfix: Fix book updates in InfluxDB * Feature: Book delta support in Redis backends * Feature: Book delta support in Kafka backend
0.22.1
Not secure
* Feature: Cleanup callback code * Feature: Poloniex subscription now behaves like other exchanges * Feature: Kafka Backend
0.22.0
Not secure
* Bugfix: Timestamp normalization for backends were losing subsecond fidelity * Feature: All exchanges report timestamps in floating point unix time * Bugfix: Implement change in OkEx's trading pair endpoint for pair generation
0.21.1
Not secure
* Feature: Config support for Coinbene, Binance, EXX, BitMEX, Bitfinex, Bitstamp, HitBTC * Feature: Complete clean up of public REST endpoints * Feature: Improved book delta example * Feature: Bitstamp Websocket V2 - L3 books now supported * Bugfix: Incorrect book building in Kraken