36 Improve output and verbose options

[mknaranja]

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Closes #36

[mknaranja]

All in all, my suggestions are far from complete but I think this is a first approach that could be merged.

@Philou31 Could you have a quick look if you like my suggestion? Better ideas or modifications proposed? How about the many commented lines of output (in particular disp()). Do we remove or uncomment and integrate them?

@CodingAllan Can you have a check that I did not introduce any new error?