should offer to set up a pre-push hook to validate that the branch is up-to-date

[fluffynuts]

using pre-git, the project should invoke the verify-up-to-date task from zarro to check that the current branch is up-to-date with the remote & with the main/master branch if it's not the main/master branch

requires:

• pre-git installed as dev-dep in target
• user selected zarro

[fluffynuts]

Note that the solution should simply involve invoking zarro verify-up-to-date.