Got the subscription event scope parameter added.

Subscription.h

@@ -12,8 +12,8 @@ namespace core {
    class Subscription {
 
    public:
-      Subscription(std::string id);
-      Subscription(std::string id, TCPSession &session);
+      Subscription(std::string id, std::string mode = "*AUTHOR");
+      Subscription(std::string id, TCPSession &session, std::string mode = "*AUTHOR");
       virtual ~Subscription();
 
       int subscribe(TCPSession &session);
@@ -24,9 +24,12 @@ namespace core {
 
       int event(std::stringstream &out);
 
+      bool ifSubscriber(TCPSession &session);
+      
       //      int processCommand(coreutils::ZString &request, TCPSession &session) override;
 
       std::string id;
+      std::string mode;
       TCPSession *owner;
 
       std::vector<TCPSession *> subscribers;