Ambiguity in the query

[nabenabe0928]

This is not exactly an issue but leads to misunderstandings, so I would like to mention it here.

1. Which will be taken into account, nepochs in the argument of Benchmark.__call__ or epoch in config dict? (I know the answer is nepochs, but it is ambiguous until we run)
2. We do not get any out of domain errors for numerical parameters (e.g. we can specify N=100) and it seems fidelity parameters are rounded somehow?
3. Continuous parameter also does not have out-of-domain errors and seems to be rounded?

I would really appreciate if we can choose a mode, either clipping automatically or raising errors anytime you get invalid items.