You'll need a working installation of git-extras for this.
$ npm version x.y.z # or npm version [patch|minor|major]
Runs the tests, builds a changelog and the authors file, updates package.json, creates a new tag and pushes the tag and its commits to the sinon repo, as well as publishing.
Create a GitHub release where you highlight interesting additions from the changelog. Just add a release notes to the existing tag.