GitLab

- added common types in pp.types
- added simulation settings in name of sparameters
- store Sparameters in .csv as well as in Lumerical interconnect format .dat
- reduce some type errors when running mypy
- fix error in u_bundle_direct_routes for a single route (thanks to tvt173)
- When a component has both a placement and a connection are defined and transform over a component, we raise an error.
- add Component().plot() in matplotlib and Component.show() in Klayout
- clear_cache when running plot() or show(). Useful for Jupyter notebooks
- add logo