async function request( url ) {
	console.log(
		'Requesting URL "%s"',
		url.length > 70
			? url.substring( 0, 67 ) + '...'
			: url
	);
	const res = await phin.promisified( url );
	if ( res.statusCode !== 200 ) {
		throw new Error(
			'HTTP response code ' + res.statusCode
			+ ' for URL: ' + url
		);
	}
	return res.body.toString();
}
Perform an HTTP request to a URL and return the request body.