Cryptofeed

* Feature: New kwarg for exchange feed - `snapshot_interval` - used to control number of snapshot updates sent to client
* Feature: Support for rabbitmq message routing
* Feature: Support for raw file playback. Will be useful for testing features and building out new test suites for cryptofeed.
* Feature: Arctic library quota can be configured, new default is unlimited
* Feature: New exchange: Probit
* Bugfix: Correctly store receipt timestamp in mongo backend
* Bugfix: FTX - set a funding rate requests limit constant (10 requests per second, 60 seconds pause between loops)
* Bugfix: Open Interest data on FTX erroneously had timestamps set to None
* Update: Binance Jersey shutdown - feed removed
* Bugfix: Fixed open interest channel for Binance Delivery

* Feature: Validate FTX book checksums (optionally enabled)
* Bugfix: Subscribing only to open interest on Binance futures gave connection errors
* Feature: Authentication for Influxdb 1.x
* Feature: Override logging defaults with environment variables (filename and log level)
* Bugfix: For Coinbase L3 books need to ignore/drop some change updates (per docs)
* Bugfix: Obey rate limits when using Coinbase REST API to get L3 book snapshots
* Bugfix: Ignore auction updates from Gemini
* Feature: Add order type (limit/market) for Kraken Trades
* Feature: Exchange specific information available via info classmethod - contains pairs, data channels and tick size
* Feature: Funding data supported on HuobiSwap
* Bugfix: Fix broken mongo callbacks in backends

* Bugfix: 136 - Kraken Rate limiting
* Feature: Funding data on Binance Futures
* Bugfix: Support new Huobi tradeId field, old id field deprecated
* Bugfix: Unclear errors when unsupported data feeds used
* Bugfix: Handle order status messages more gracefully in Coinbase
* Bugfix: Fix Kraken pair mappings
* Feature: New Exchange - Gate.io
* Feature: Remove \_SWAP, \_FUTURE channel (and callback) types - determine correct type at subscribe time based on symbol
* Docs: Add documentation about callbacks
* Feature: Deribit provides sequence number for book updates - check them to ensure no messages lost
* Bugfix: Fix timestamp on Binance Futures Open Interest
* Bugfix: Update/standardize liquidation callbacks
* Feature: Update Upbit subscription methods based on updated docs
* Bugfix: Ticker not working correctly on Binance Futures
* Feature: Liquidations callbacks for backends

* Feature: New Exchange - FTX US
* Feature: Add funding data to rest library
* Bugfix: DSX updated their API, websocket no longer supported. Removing DSX
* Feature: Websocket client now uses unbounded message queue
* Feature: Support for HuobiDM next quarter contracts
* Bugfix: Fix datetime fields in elasticsearch
* Feature: BinanceFutures: support ticker, open interest and Liquidation, FTX: support open interest and liquidations, Deribit: liquidations support
* Bugfix: Fix receipt timestamps in Postgres backend
* Bugfix: Huobi Swap Init

* Feature: Support for disabling timeouts on feeds
* Bugfix: 224 Ignore newly added trading pairs in Poloniex while running
* Feature: New exchange, DSX
* Bugfix: Bybit updated their API, websocket subscription to L2 book data needed to be updated
* Bugfix: Deribit subscription condensed into a single message to avoid issues with rate limit
* Bugfix: Funding interval for bitmex not converted to integer
* Bugfix: HuobiSwap missing from feedhandler
* Feature: Optional flag on Feed to enable check for crossed books
* Feature: Blockchain Exchange

* Feature: Add missing update detection to orderbooks in Binance
* Feature: REST support for FTX
* Feature: Added new field, receipt timestamp, to all callbacks. This contains the time the message was received by cryptofeed.
* Feature: Upbit Exchange Support