Improve Twitch PubSub connection reliability (#3643)

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/widgets/Window.hpp

@@ -2,6 +2,7 @@
 
 #include "widgets/BaseWindow.hpp"
 
+#include <boost/signals2.hpp>
 #include <pajlada/settings/setting.hpp>
 #include <pajlada/signals/signal.hpp>
 #include <pajlada/signals/signalholder.hpp>
@@ -48,6 +49,7 @@ private:
     std::shared_ptr<UpdateDialog> updateDialogHandle_;
 
     pajlada::Signals::SignalHolder signalHolder_;
+    std::vector<boost::signals2::scoped_connection> bSignals_;
 
     friend class Notebook;
 };