Function kept_if_nothing_better 

pub fn kept_if_nothing_better(class: StationarityClass) -> bool

Is a converged, physical point that does not answers still worth reporting if no later stage certifies? W is: it is the honest answer where no S point exists nearby (ralph1’s origin). Measured on the CALIPSO corpus’s complementarity model, stopping at the first W point returned objective 85 where the continuation reaches the S optimum at 17.