Added Open/Close to transaction

ChaosBot/Database/Controller.cs

@@ -96,6 +96,8 @@ namespace ChaosBot.Database
             SqliteCommand command = _conn.CreateCommand();
             SqliteTransaction transaction;
 
+            _conn.Open();
+            
             // Start a local transaction.
             transaction = _conn.BeginTransaction();
 
@@ -138,6 +140,7 @@ namespace ChaosBot.Database
                 return 0;
             }
 
+            _conn.Close();
             return cmds.Count;
         }