Added
- Support for `ORDER_TRADE_UPDATE`, `ACCOUNT_CONFIG_UPDATE`, `MARGIN_CALL`
and `ACCOUNT_UPDATE` in `binance_futures_websocket()` (Thx StarBalll
[PR23](https://github.com/LUCIT-Systems-and-Development/unicorn-fy/pull/23) and
[PR25](https://github.com/LUCIT-Systems-and-Development/unicorn-fy/pull/25)
- unittests for `ORDER_TRADE_UPDATE`, `ACCOUNT_CONFIG_UPDATE`
and `ACCOUNT_UPDATE` in `binance_futures_websocket()`