Feature request: Also round the corners of the blue "snap to fullscreen / left / right" preview rectangle

[JaneSmith]

Not really a huge deal, but the perfectionist in my wants to request the following feature:

When grabbing a window and holding it to the top, left, or right sides of the screen, a blue rectangle is drawn which previews how the window will be snapped. That rectangle does not have rounded corners, so the corners disappear behind the rounded top bar corners. It would look nicer if the blue rectangle also had rounded corners, so it wraps around alongside the top bar.

Thank you so much for this extension. It's a huge improvement.