Exchanges-wrapper

Update
* Bitfinex: add "receive_timeout=30" parameter in ws_connect(), this is a reliable solution for monitoring the presence
of a connection

Update
* Add OKX section in config file

Fixed
* FTX: OnFundsUpdate() did not return a result

Added for new features
* OnBalanceUpdate() for autocorrect depo and initial balance

Update
* refactoring http_client module for multi exchanges purposes
* added _percent_price filter dummy for all parsers

Fixed
* 2 FTX WS market stream lies down quietly

Update
* Slightly optimized process of docker container setup and start-up

Added for new features
* Published as Docker image

Update
* README.md add info about Docker image use

Update
* Restoring the closed WSS for any reason other than forced explicit shutdown