Added support for Historical Count Endpoint

Added Token to WS Client and Historical Candles Endpoint

Updated version to 0.2.8

Added Support for Shrimpy Historical and Management APIs

Added ShrimpyWsClient to connect to the Shrimpy Websocket API

updated version to 0.2.3

updated README

updated version

added exchangeApiErrors to accounts and trades

added market orderbook method, updated signature to include querystring