#15 Retain original timestamp and check for a file update

[Anonymous]

Hello,

The program should have the following two features:

1. Ability to preserve an original timestamp of a file. That is, the file that has been downloaded with WSDM, should have the same time and date as the file on a server where it was downloaded from.

2. Ability to check for a file update (send query to a server where it was downloaded from) and to re-download it if this file' metrics (size and timestamp) are different from the ones in the WSDM' list of the downloaded files.

Thank you!