handle = hurl.Share([table])
This share handle is what you pass to curl using the #CURLOPT_SHARE
option with easy:SetOpt() to make that specific curl handle use the data in this share.
The optional table
argument allows you to get additional options for the share object. It is possible to use
all options here that can also be get separately using the share:SetOpt() command. See hurl:Easy for an example.