A --password-prompt option was added, which causes the
program to prompt for the proxy username and password
instead of requiring them to be entered on the command line.
This release adds a --max-processes option for limiting the number of
processes that prtunnel uses. A few bugs have been also fixed,
including one that was a potential security hole for anyone who runs
prtunnel in IPv6 mode and uses the -T (trusted address) option to
allow connections from a non-localhost address.