Missing attributes in the Future(Contract) class

[AnAlgoTrader]

Hi, I tried to subscribe to GLOBEX market data (level 1) by using the request 'reqMktData'.
I got an error as IB is asking for more attributes to be provided. I managed to get it to work by adding 'lastTradeDateOrContractMonth' and 'localSymbol' attributes.

This is the class I ended with, in case you would like to test it.

    class Future implements Contract {
         secType: SecType;
         symbol: string;
         localSymbol: string;
         lastTradeDateOrContractMonth: string;
         exchange: string;
         multiplier: number;
         currency: string;

        constructor(symbol: string, localSymbol: string, lastTradeDateOrContractMonth: string, 
                       exchange: string, multiplier: number, currency: string) {
        this.secType = SecType.FUT;
        this.symbol = symbol;
        this.lastTradeDateOrContractMonth = lastTradeDateOrContractMonth;
        this.localSymbol = localSymbol;
        this.exchange = exchange;
        this.multiplier = multiplier;
        this.currency = currency;
    }
}

Thank you for your hard work!
Great repository.

[mfrener]

PR is open, thanks!
#134

[Tsopic]

Merged