The client contacted us with a request to implement additional functionality to the plugin. It was necessary to add pages into related searching by tags. It took two bussiness days to complete customization. Now, plugin allows to use the same tags list for posts and pages which expands Related Posts Plugin functionality for pages. Also we provided the client with all the necessary instructions to implement the changes on the site.
Apart from that, we added this functionality to the main plugin version, so that the client could use this functionality on other websites, as well as to keep a possibility to update the plugin.