@nilnilnil yes "update" and "upgrade" are meant to do the same thing, but seeing as DuckPAN also functions similarly to a package manager, I can see `update` being missleading.

Brew for example uses `upgrade` to install the newest versions of the packages you have, whereas 'update' is used to install the newest version of brew from GitHub.

I'm not sure if any developers would assume `upgrade` to modify your local perl packages and `update` to install the newest `App::Duckpan`.

Either way it seems to me that `update` is the more canonical command for installing the newest version of the program you're running, so I'm in favor of this PR.