- gf.simulation.get_sparameters_path takes kwargs with simulation_settings
- cross have port_type argument
- splitter_tree exposes bend_s info
- change simulation_settings default values
- port_margin = 0.5 -> 1.5
- port_extension = 2.0 -> 5.0
- xmargin = 0.5 -> 3.0
- ymargin = 2.0 -> 3.0
- remove pml_width as it was redundant with xmargin and ymargin
- route with auto_taper was missing a mirror