1. Test (make clean all check), fix if broken before proceeding
2. Ensure proper version in package.json and package-lock.json
3. Ensure NEWS section exists for the new version, review it, add release date
4. Commit package.json, npm-shrinwrap.json, NEWS
5. git tag -a Major.Minor.Patch # use NEWS section as content
6. Stub NEWS/package for next version

Versions:

Bugfix releases increment Patch component of version.
Feature releases increment Minor and set Patch to zero.
If backward compatibility is broken, increment Major and
set to zero Minor and Patch.

Branches named 'b<Major>.<Minor>' are kept for any critical
fix that might need to be shipped before next feature release
is ready.