Cryptofeed

* Feature: Support for order info stream on BitMEX
* Bugfix: Datetime/Timestamp conversion fixes
* Feature: Add support for Huobi Linear Swaps
* Update: Change Coinbase REST calls to use Ticker and Trade data types
* Bugfix: Instrument and channel filtering sometimes matched incorrectly when creating connection specific subscriptions
* Bugfix: retry kwargs were not correctly passed through to the async HTTP connection handler in Coinbase REST methods
* Update: Revamp Coinbase authenticated REST endpoints; change to use the Cython data types
* Feature: Add from_dict static method in Cython types to support creation of object from dict (for serialization/deserialization)
* Feature: New QuestDB backend
* Update: Exchange name change OKEx -> OKX
* Bugfix: OKX candle REST code was setting values incorrectly
* Update: OKX now uses v5 for all connections (REST and WS). Update endpoints to new exchange name: okex.com -> okx.com

* Feature: New exchange: Bit.com
* Feature: Rework how exchanges that have multiple websocket endpoints are managed and configured.
* Bugfix: Use UTC for datetime conversions in REST api
* Bugfix: Funding rate of 0 was being converted to None when to_dict was called
* Feature: Add OKEx REST API and implement candle function
* Feature: Added trading endpoints to Bitfinex REST mixin
* Bugfix: Change to Okex to allow futures and options subscriptions
* Update: Deribit ticker, trades, and orderbook channels now require authentication
* Bugfix: Fix candle backend for InfluxDB
* Bugfix: OKEx REST candle fix
* Feature: Added ability to use your own Postgres table layouts
* Bugfix: Binance connections that do not require websocket were failing on connect
* Feature: Write native datetimes to Mongo
* Feature: Mongo backend now supports bulk writes + queuing of messages

* Feature: Tweak Postgres backend to not store duplicated data for orderbooks.
* Feature: Provide sample book schema for Postgres.
* Feature: Add subaccount info to OrderInfo and Fills data types.
* Bugfix: Fix issue in orderbook cross check.
* Bugfix: Simplify dYdX orderbook logic.
* Bugfix: Raise error if client tries to subscribe to KuCoin book data without an API key.
* Feature: Add ByBit sandbox endpoints.
* Bugfix: Fix calculation in OrderInfo on Binance.
* Feature: Support list of bootstrap servers for Kafka backend.
* Feature: Add OrderInfo and Fills zmq callbacks

* Bugfix: Position data type missing side field.
* Bugfix: Position data type had unused field 'id'.
* Bugfix: Fix Bybit OrderInfo msg/data dict.
* Feature: Add support for sandbox/testnet on BinanceFutures.
* Feature: New exchange - Crypto.com.
* Bugfix: Fix MongoDB backend.
* Update: reduce code duplication for candle interval normalization.
* Update: Simplify code around address specification and selection when using sandbox/testnet.
* Bugfix: Phemex rounding errors, incorrect volume.
* Feature: Add sandbox/testnet endpoint for Phemex.
* Feature: New exchange - Delta.
* Update: Tweak tests to remove deprecation warnings.
* Bugfix: Fix token usage in Binance.
* Update: Change Binance trades to use trade timestamp instead of event timestamp.

* Bugfix: Update binance user data streams to use cdef types.
* Feature: Add none_to kwarg to to_dict method of data type objects. Allows replacmen of Nones with specified value.
* Bugfix: Some redis backends were trying to write Nones to storage and failing.
* Update: Renamed as_type kwarg on to_dict to numeric_type.
* Bugfix: Some dYdX symbols were incorrectly classified as spot.
* Update: Drop support for Python 3.7.
* Bugfix: Orderbooks need to be truncated to the correct depth when max depth is smaller than the maximum on Kraken.
* Update: Coinbase having similar issues other exchanges with websocket compliance. Updated to fix connection
* Update: Backends will fill in missing timestamps with receipt_timestamp
* Update: Okex auth channel Orders added

* Bugfix: Use timestamp_e6 for data derived from Bybit's instrument_info data feed.
* Bugfix: Update postgres examples and schema. Fix postgres backend for all dtypes.
* Bugfix: Kucoin has a limit of 100 symbols per subscription message and 300 per connection. These limits are now respected.
* Bugfix: Error messages were not handled correctly on Kucoin, causing a crash.
* Bugfix: FTX websocket endpoint update.
* Bugfix: Fix the address used for authenticated Binance streams.
* Bugfix: Handle cases where Bitmex book data is empty.