Sulyma30

Intersection is not counted properly

1

If a bbox degenerates into an interval (x_min=x_max or y_min=y_max), then corresponding width=0 and [intersection](https://github.com/mathandy/svgpathtools/blob/fcb648b9bb9591d925876d3b51649fa175b40524/svgpathtools/bezier.py#L247) is not counted