No =destroy hook(s) in std/tables?

[ringabout]

I'm looking into this issue. There is another workaround using `var T` 
destructors:
    
    
    proc `=destroy`(x: var BObj) =
        echo "Destroying B named ", x.name
        `=destroy`(x.name)
        `=destroy`(x.tableField)     # Workaround for lack of =destroy in Table
    
    
    Run