Hi, first off great work on this little plugin thus far! It's definitely saved me a lot of work.
However one feature that I wish was included in the widget was the ability to sort testimonials by random order.
I have a site where the client has requested 1 random testimonial displaying in the sidebar of every page. But in order to accomplish this I need to manually code my own widget rather than use the native testimonial widget included with this plugin.
Just a suggestion for an easy update that I think many users would find helpful.