Bigfoot.js works in Customizer but not on live site

I'm having a strange problem. I have setup the child theme, added the Bigfoot file accordingly and ammended the functions file with this:

add_action( 'wp_enqueue_scripts', 'tu_enqueue_bigfootjs' );
function tu_enqueue_bigfootjs() {
    wp_enqueue_script( 'bigfoot.js', get_stylesheet_directory_uri() . '/bigfoot/bigfoot.js', array('jquery'), false, false );
    wp_enqueue_style( 'bigfoot-default.css', get_stylesheet_directory_uri() . '/bigfoot/bigfoot-default.css' );
}

add_action( 'wp_footer', 'tu_add_bigfootjs' );
function tu_add_bigfootjs() { ?>
    <script type="text/javascript">
        jQuery.bigfoot(
		{
			numberResetSelector: "article"
		}
	);
</script>
<?php }

When I open up the Customizer to preview the footnotes, they work perfectly. But once I test the live site, the script doesn't run so I'm left with ordinary footnotes. I can't get Piwik to track anything either, so I suspect the same problem is affecting both scripts?

Please help