Stop publish if too many/few words.

wordcount-limit.js

	$(document).on('submit', '#post', function() {
		const coreWordCounter = new window.wp.utils.WordCounter();
		const $mtSeoTitle = $( '#mt_seo_title' );
		const mtWordCount = coreWordCounter.count( $mtSeoTitle.val() );
		if ( 18 < mtWordCount ) {
			alert( 'SEO Error: The title in your SEO Pack cannot exceed 18 words when included in Google News. Please try again.' );
			$( this ).find( 'input[type="submit"]' ).removeClass( 'disabled' )
				.end().find( '.spinner' ).hide();
			return false;
		}
  }