UTF-32 support

Unicode character support of ES6 and comparison between the for-of and for-in loops

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Consider the following code snippet:

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let text = '\u{1F601}\u{1F43C}';
console.log( 'text: ', text );
for( let i in text ) {
console.log(text[i]);
};
console.log('-----');
for ( let c of text ) {
console.log( c );
};

Execute the above ...