Add new REST endpoints

https://bybit-exchange.github.io/docs/inverse/#2020-08-19
getOpenInterest
getLatestBigDeal
getLongShortRatio

https://bybit-exchange.github.io/docs/inverse/#2020-07-07
getAssetExchangeRecords

lib/rest-client.js

@@ -152,6 +152,10 @@ module.exports = class RestClient {
     return await this.request.get('open-api/wallet/withdraw/list', params);
   }
 
+  async getAssetExchangeRecords(params) {
+    return await this.request.get('v2/private/exchange-order/list', params);
+  }
+
   async getWalletBalance(params) {
     assert(params, 'No params passed');
     assert(params.coin, 'Parameter coin is required');
@@ -214,6 +218,29 @@ module.exports = class RestClient {
     return await this.request.get('v2/public/kline/list', params);
   }
 
+  async getOpenInterest(params) {
+    assert(params, 'No params passed');
+    assert(params.symbol, 'Parameter symbol is required');
+    assert(params.period, 'Parameter period is required');
+
+    return await this.request.get('v2/public/open-interest', params);
+  }
+
+  async getLatestBigDeal(params) {
+    assert(params, 'No params passed');
+    assert(params.symbol, 'Parameter symbol is required');
+
+    return await this.request.get('v2/public/big-deal', params);
+  }
+
+  async getLongShortRatio(params) {
+    assert(params, 'No params passed');
+    assert(params.symbol, 'Parameter symbol is required');
+    assert(params.period, 'Parameter period is required');
+
+    return await this.request.get('v2/public/account-ratio', params);
+  }
+
   async getLatestInformation() {
     return await this.request.get('v2/public/tickers');
   }