message: Calculated sweep_angle in call to lyon::geom::Arc was actually end_angle
  Adresses `Arc end_angle should be renamed to span_angle #400`
diff: @@ -84,7 +84,7 @@ impl Builder {
  radii: math::Vector::new(arc.radii.x, arc.radii.y),
  x_rotation: math::Angle::radians(arc.rotation),
  start_angle: math::Angle::radians(arc.start_angle),
  - sweep_angle: math::Angle::radians(arc.end_angle),
  + sweep_angle: math::Angle::radians(arc.end_angle - arc.start_angle),
  };
  let _ = self.raw.move_to(arc.sample(0.0));
  