code: function release(importance) {
  	const version_bump = done => importance !== false ? gulp.series(bumpVersion(importance))(done) : done();
  
  	return done => gulp.series(
  		() => check_out('develop'),
  		version_bump,
  		finish_release
  	)(done);
  }
docs: Do a full Git Flow release which can optionally include a version bump