Added fucntion OrderCloseAll into mt5 api

MtApi5/MtApi5Client.cs

@@ -466,6 +466,15 @@ namespace MtApi5
 
             return sendCommand<string>(Mt5CommandType.HistoryDealGetString, commandParameters);
         }
+
+        ///<summary>
+        ///Close all open positions. 
+        ///</summary>
+        ///<param name="ticket">OrderCloseAll</param>
+        public bool OrderCloseAll()
+        {
+            return sendCommand<bool>(Mt5CommandType.OrderCloseAll, null);
+        }
         #endregion
 
         #region Account Information functions

MtApi5/MtCommandType.cs

@@ -99,6 +99,7 @@ namespace MtApi5
         SymbolInfoSessionTrade              = 59,
         MarketBookAdd                       = 60,
         MarketBookRelease                   = 61,
-        MarketBookGet                       = 62
+        MarketBookGet                       = 62,
+        OrderCloseAll                       = 63
     }
 }

MtApi5/Properties/AssemblyInfo.cs

@@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.7.0")]
-[assembly: AssemblyFileVersion("1.0.7.0")]
+[assembly: AssemblyVersion("1.0.8.0")]
+[assembly: AssemblyFileVersion("1.0.8.0")]