Upgrade a repo

In order to upgrade a previously installed repository, the "newt upgrade" command should be issued:

$ newt upgrade

Newt upgrade will look at the current desired version in project.yml, and compare it to the version in project.state. If these two differ, it will upgrade the dependency. Upgrade works not just for the dependency in project.yml, but for all the sub-dependencies that they might have.

If you have changed any settings in the project.yml file, you should run newt upgrade to ensure that your repos are all up to date with the versions specified in your project.yml file.