refactor: Update CMake build system and streamline Core object serialization and property handling.

src/Core/Object.h

@@ -107,6 +107,7 @@ public:
     //        if(sig && slo)
     //            return Object::connect(sig,slo->operator ()(),receiver);
     //        else return false;
+    return false;
   }
 
   // Qt5 style connector //
@@ -119,11 +120,13 @@ public:
         typename FunctionPointer<Func2>::SignalSignature>
         SigT;
     ConnectSignal(sigb, slof, receiver);
+    return true;
   }
 
   template <typename FuncT>
   static inline bool connect(SignalBase *sigb, FuncT slof, Object *receiver) {
     ConnectSignal(sigb, slof, receiver);
+    return true;
   }
 
   template <typename FuncT>
@@ -139,7 +142,7 @@ public:
   }
 
   template <typename FuncT> inline bool addSlot(FuncT fun, const char *name) {
-    this->addSlotImpl(GenericMFPtr(fun), name);
+    return this->addSlotImpl(GenericMFPtr(fun), name);
   }
 
   template <typename FuncT>