Deleting from the annotation list no longer crashes your next shape

Fixed a crash where deleting an annotation from the list's right-click menu brought the app down on the next shape you drew (a v7 regression; v6.x never saw it). AI polygon output also stops emitting degenerate two-point "polygons" for razor-thin detections, alongside a handful of smaller robustness fixes; the release notes have the full list.

Update from the download page.