Add cpan-outdated symlink to /opt/local/libexec/perl5.20/sitebin/
Add example external brew-cask command to list casks needing updating; add completion
Add cask completion for the remaining brew-cask commands
Use new cpan-outdated (App::cpan-outdated) to upgrade CPAN modules

Quicker, fast output showing what will be updated, and while Alien Subversion still fails and takes forever, at least this way it finally enters the default answers for me