Exchange.php cleanup #4226 https://github.com/ccxt/ccxt/commit/8271a0a6ec581f7b17a44c812849245bd5f7e435#commitcomment-31642703
Exchange.php cleanup #4226 https://github.com/ccxt/ccxt/commit/8271a0a6ec581f7b17a44c812849245bd5f7e435#commitcomment-31642703

ccxt/ccxt,ccxt/ccxt,ccxt/ccxt,ccxt/ccxt,ccxt/ccxt