function createTopics( words ) {
	var word;
	var out;
	var i;

	out = [];
	for ( i = 0; i < words.length; i++ ) {
		word = words[ i ];
		if (
			!startsWith( word, 'std' ) &&
			word.length <= 35 // GitHub topics may not have more than 35 characters
		) {
			word = replace( word, ' ', '-' ); // GitHub topics may not include spaces, but allow hyphens
			if ( RE_ALLOWED_TOPIC_CHARS.test( word ) ) {
				out.push( word );
			}
		}
	}
	return BASIC_GITHUB_TOPICS.concat( out ).slice( 0, 20 ); // GitHub repositories may not have more than 20 topics
}
Creates a list of GitHub topics.

@private
@param {StringArray} words - list of keywords
@returns {StringArray} list of topics