Method setChanged

Fleece/Mutable/MutableArray.hh:44–44

        const Array* source() const                 {return heapArray()->_source;}
        bool isChanged() const                      {return heapArray()->isChanged();}
        void setChanged(bool changed)               {heapArray()->setChanged(changed);}

        ValueSlot& setting(uint32_t index)          {return heapArray()->setting(index);}
        ValueSlot& inserting(uint32_t index)        {return heapArray()->inserting(index);}