Hey @krumch - I am finally getting around to implementing your new shortcode feature of the plugin. Thanks so much for making it happen. I happened to notice, however, that it is displaying the shortcode data at the top of the page rather than where I've put the shortcode.
According to the WP API (https://codex.wordpress.org/Shortcode_API):
The return value of a shortcode handler function is inserted into the post content output in place of the shortcode macro. Remember to use return and not echo - anything that is echoed will be output to the browser, but it won't appear in the correct place on the page.