Feature: Update single package via CLI

Using the console tool/script it is not possible to update a single package.
Only all packages can be updated by using console update.

Use case for updating just a single package:
I made changes to my site's template package.
Now I want to deploy these changes to the live-system.
If I run console update all packages are updated, which may break my site. Therefore I have to test everything. I'd like to just run e.g. console update my/template to just update the single package. If just the single package (and it's dependencies) are updated, I don't have to test the whole site.