use https for schema.org urls, apply some code improvements suggestio… …ns (#33) * use https for schema.org urls, apply some code improvements suggestions * apply PSR-12 style, remove debug logging * copyright updates * Update composer.json for scrutinizer scrutinizer builds fail with 8.1 because: `Requested 'openssl >= 1.0.2' but version of OpenSSL is 1.0.1f`