I've added the missing C# wrappers (listMarketProfitAndLoss, listCurrentOrders, listClearedOrders, cancelOrders, replaceOrders, updateOrders)

I've added the missing C# wrappers (listMarketProfitAndLoss, listCurrentOrders, listClearedOrders, cancelOrders, replaceOrders, updateOrders). I've coded the same was as you coded for the sample C# application. Also I've tested them properly. Just wanted to contribute this back to your great code!