Preserve timestamps of directories (Bug #94)
I also would like to have the option "Preserve timestamp" working for folders too.
It would mean a more reliable copy, preserving more details of the source.
Maybe we should preserve only when Destination directory doesn't exist or is empty.
It might be good to think about other conditions where we could preserve or not timestamps.
E.g, adding a new file to a not-empty Destination folder should update its timestamp as usual.