BetterPolygon: handle deletion conflicts with annotation deletion

[AlexMili]

Hi, I would like to handle both deletion of an handle and the deletion of the whole selection but they conflict with each others. The solution I am thinking of is testing if an handle is selected when delete action is caught and ignore selection deletion to let BetterPolygon catch the delete event. The problem is that I don't know how to access if an handle is selected from the Annotorious object. Is there a way to access it ?