Creates a new feature branch as a direct child of the current branch.Syncs the current branch, forks a new feature branch with the given name off the current branch, makes the new branch a child of the current branch, pushes the new feature branch to the remote repository (if and only if [new-branch-push-flag](./new-branch-push-flag.md) is true), and brings over all uncommitted changes to the new feature branch.
See sync for information regarding remote upstream.
git town append <branch>