Disable the indication of call progress

You will be familiar with indication of call progress created by opalr:

> d <- ds.dim('D')
  Aggregated (dimDS("D")) [==============================================================] 100% / 0s
>

If you wish to disable these indications, this can be done by:

> options(datashield.progress=FALSE)

and re-enabled using:

> options(datashield.progress=TRUE)

in additions the follow options are available

> options(datashield.progress.clear=TRUE)

and

> options(datashield.errors.stop=FALSE)