message: Replace references to package-lock.json with yarn.lock
diff: @@ -120,7 +120,7 @@ function createGitTag() {
  function createGitCommit() {
  return gulp
  - .src(['./package.json', './package-lock.json', 'CHANGELOG.md'])
  + .src(['./package.json', './yarn.lock', 'CHANGELOG.md'])
  .pipe(git.commit('bump version'));
  }
  @@ -128,7 +128,7 @@ function updateVersion(done) {
  var options = minimist(process.argv.slice(2), releaseOptions);
  return gulp
  - .src(['./package.json', './package-lock.json'])
  + .src(['./package.json', './yarn.lock'])
  .pipe(bump({ type: options.semver }))
  .pipe(gulp.dest('./'))
  .on('end', () => {
  