Some new hooks

Hello there,

I would like to suggest you some new hooks that could be really helpful in our case, but maybe to other devs.

In the method format_carthook_cart() it could be great to find a filterable $carthook_cart before the return, like that:

$carthook_cart = apply_filters( 'carthook_woo_before_encode_cart', $carthook_cart );
return json_encode( $carthook_cart );

Same thing during the items population (the array) in the same function, some filters could be helpful :

$carthook_cart['items'][] = array(
	'imgUrl'        => apply_filters( 'carthook_woo_items_imgUrl', wp_get_attachment_url( $_product->get_image_id() ), $_product->id, $item ),
	'url'           => apply_filters( 'carthook_woo_items_url', get_permalink( $_product->id ), $_product->id, $item ),
	'name'          => apply_filters( 'carthook_woo_items_name', $_product->post->post_title, $_product->id, $item  ),
	'eachItemCost'  => apply_filters( 'carthook_woo_items_eachItemCost', strval( $eachItemCost ), $_product->id, $item ),
	'totalItemCost' => apply_filters( 'carthook_woo_items_totalItemCost', strval( $totalItemCost ), $_product->id, $item )
);

Just some ideas that could help developers in specific cases ??
Thanks you in advance.