Issue #107: Added function PositionCloseAll

MtApi5/Mt5CommandType.cs

@@ -250,6 +250,7 @@ namespace MtApi5
         GlobalVariablesDeleteAll            = 157,
         GlobalVariablesTotal                = 158,
 
-        UnlockTicks                         = 159
+        UnlockTicks                         = 159,
+        PositionCloseAll                    = 160
     }
 }

MtApi5/MtApi5Client.cs

@@ -521,11 +521,20 @@ namespace MtApi5
         ///<summary>
         ///Close all open positions. 
         ///</summary>
+        [Obsolete("OrderCloseAll is deprecated, please use PositionCloseAll instead.")]
         public bool OrderCloseAll()
         {
             return SendCommand<bool>(Mt5CommandType.OrderCloseAll, null);
         }
 
+        ///<summary>
+        ///Close all open positions. Returns count of closed positions.
+        ///</summary>
+        public int PositionCloseAll()
+        {
+            return SendCommand<int>(Mt5CommandType.PositionCloseAll, null);
+        }
+
         ///<summary>
         ///Closes a position with the specified ticket.
         ///</summary>