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.
table argument allows you to set additional options for the share object. It is possible to use
all options here that can also be set separately using the share:SetOpt() command. See hurl:Easy for an example.