related_post_gen benchmark

[Araq]

Good point.
    
    
    proc `[]`*[A, B](t: Table[A, B], key: A): B
    
    
    Run

Should be
    
    
    proc `[]`*[A, B](t: Table[A, B], key: A): lent B
    
    
    Run

indeed. PRs are welcome.