What is MergeUi? A Visual Studio Addin to create and edit MERGE statements in SSDT projects.
What have you done? I have released a new version of MergeUi, thanks to Luca Zavarella for prodding me into getting this release out and for pointing out some bugs!
This has a number of bug fixes and a new UI, the old one was pretty ugly, although this still isn't 100% perfect but it should be more usable.