[feature request] Stack.First and Stack.Last properties

[engor]

I use these extension properties:

Class Stack<T> Extension
    
    Property First:T()        
        Return Self.Length ? Self[0] Else Null
    End
    
    Property Last:T()        
        Return Self.Length ? Self[Self.Length-1] Else Null
    End
End

Would be nice to have them out of the box.