v0.0.68

CHANGELOG

1. Enhancements

[Venues] Decouple order book streams from products
[Venues] Only subscribe the Binance + GDAX streams when there is at least 1 order book
[Venues] Start Bybit venue adapter. Support spot + derivatives product list

2. Bug fixes

3. Soft-deprecations (no warnings emitted)

4. Hard-deprecations