Release to GitHub when publishing to NPM
Release to GitHub when publishing to NPM

The `postpublish` hook now automatically creates a release on GitHub.
This means that the release process is now as follows (assuming it's a
patch release):

```
npm version patch
git push && git push --tags
npm publish
```

followed by clicking the displayed release link URL and adding the
actual release notes.

BladeRunnerJS/emitr