Filter request

Hi, firstly love your plugin. I would like to request a filter for the $defaults array in the cmspo_list_pages function [line 302] so I can customise the query that grabs the posts to be displayed in the tree.

For me this would be greatly useful as I use my own navigation system and want to only display posts that have certain meta data attached to them so as to not confuse my clients with posts that shouldn’t be there.

https://www.ads-software.com/extend/plugins/cms-page-order/