too much printing for some datasets

[CarloLucibello]

There is a lot of output when testing OGBDataset and SMSCollection, see this CI run.
Maybe we can suppress these outputs although I'm not sure why we don't see this verbosity with other datasets

[Dsantra92]

OGBDataset downloads zipped CSVs. All the verbosity is due to these zipped CSVs.

[CarloLucibello]

Is there something like a verbose=false argument we can pass?

[Dsantra92]

Is there something like a verbose=false argument we can pass?

DataDeps.unpack does not accept extra keyword arguments. Moreover, 7z does not give the option for silent extraction.

If we design our own unpack method, we need to pipe the output to null in UNIX systems. Don't know how the null concept works in Windows.

[Dsantra92]

Awaiting oxinabox/DataDeps.jl#143