The UI and options provided in the addon are more expansive than what they added to the vanilla Blender Alt+D menu. Shear doesn't even seem to work on the main branch; Scale only has scale average (not top/bottom)
They didn't include the Anim offset functions either.
I would pay for this addon for what it adds to Blender and it saddens me that development has stopped in favor of integration, as the integration thus far is inferior.