Allow HTML tags in content limit

content_limit_tags.php

<?php

add_filter( 'get_the_content_limit_allowedtags', 'get_the_content_limit_custom_allowedtags' );
/**
* @author Brad Dalton
* @example http://wp.me/p1lTu0-a5w
*/
function get_the_content_limit_custom_allowedtags() {
	// Add custom tags to this string
	return '<script>,<style>,<br>,<em>,<i>,<ul>,<ol>,<li>,<a>'; 
}