0.13.0

• [tessellation] Bug fixes.
• [tessellation] Better error handling.
• [tessellation] Improved API ergonomics.
• [geom] Cubic bézier curves intersection using fat line clipping.
• [geom] Elliptic arc to cubic bézier approximation.
• [geom] tight bounding rects for elliptic arcs.
• [path] Bug fixes.
• [path] lyon_path::default::Path is now lyon_path::Path.
• [path] The iterator APIs now provide full segments.
• [path] PathIterator is now a simple extension trait.
• [path] Some path_iter() method have been removed in favor of iter().
• [path] New cursor API.
• [path] The builder traits are object-safe.
• [path] Path inversion algorithm.
• [algorithms] Path splitting algorithm.
• [algorithms] Ray casting algorithm,