Hi - I see in the plugin code a pagination argument. When I include it in the shortcode, the navigation links appear but they do not advance pages when clicked. Pagination seems to not be documented in the instructions. Does this work or is it for a future plugin version?
Also, I would really like to be able to have a "Byline" column on the admin Testimonials list page.
I like how you have allowed for displaying testimonial excerpts on the admin list page with a button click.
It would be helpful to add Byline, URL, and Gravatar EMail to the Quick Edit options, for ease in editing long lists of testimonials.
Your stripped down plugin approach works well for me.