add assembly to gcompose, not working yet

src/Math/Assembly.h

@@ -52,6 +52,12 @@ public:
     Assembly(const Assembly &copy);
     virtual ~Assembly();
 
+    template <class ArchiveT>
+    void serialize(ArchiveT & ar, const unsigned int version) {
+        ar & boost::serialization::make_nvp("AffineTransform", boost::serialization::base_object<AffineTransform>(*this));
+        ar & boost::serialization::make_hrp("GroupSelection", m_GroupSelection);
+    }
+
     virtual void AddObject(Object* obj) override;
     virtual void RemoveObject(Object* obj) override;
 
@@ -93,7 +99,7 @@ signals:
         if (m_InUpdated) return;  // break signal recursion
         m_InUpdated = true;
         this->ComputeBoundingBox();
-        ULIB_SIGNAL_EMIT(Assembly::Updated);
+        ULIB_SIGNAL_EMIT(Object::Updated);
         m_InUpdated = false;
     }
 
@@ -103,6 +109,7 @@ private:
     bool     m_ShowBoundingBox;
     bool     m_GroupSelection;
     bool     m_InUpdated = false;
+    std::map<Object*, Connection> m_ChildConnections;
 };
 
 } // namespace uLib