cache: logical variable controlling whether or not to cache the data so that when calling the function for the same dataset it will be loaded from cache rather than re-downloading from the github site
refresh: logical variable controlling whether or not to re-download a cached dataset
Returns
An object of class data.table .
Details
The following are valid names of datasets available:
"stocksCRSPdaily""Details same as for stocksCRSP except now daily"
"stocksCRSPweekly""Details same as for stocksCRSP except now weekly"