This will checkout a new branch from your stable one, following naming pattern.
git tw feature start my-killer-feature
After creating a release (see below), you have to merge feature back, where is how to do
git tw feature finish my-killer-feature
git tw release start my-killer-release
git tw feature merge-into-release 3346
which is the stable branch (stable:master) prefixing feature branches (feature: feature/)