WHATWG Encoding Standard, https://encoding.spec.whatwg.org/
indexes.json sha256 b7c8961095f0b4cae8f4a16a5011e7c84047a60c1277e28ee8df9e56074ee509
encodings.json sha256 078212b3697f60b81225b6671bd9da2604497abff0aa8e96e4d46605c02ac9e7
