Migrate to S3Represent (Patient)

Drat, this starts becoming absurd. Indeed I imagined it to be:

    db(query).select(..., limitby = (0, count))

instead of introducing a local limitby variable - but then I have also said that in no way that is a technical or coding style requirement, just something that crossed my mind when looking at it. Now I feel guilty of having caused unnecessary trouble - maybe should have declared "no action required" more explicitly?