Gdsfactory

- test cutbacks2x2 [PR](https://github.com/gdsfactory/gdsfactory/pull/1479)
- improve `stack_with_offset` [PR](https://github.com/gdsfactory/gdsfactory/pull/1480)

- Some changes to section based ring and ViaStacks [PR](https://github.com/gdsfactory/gdsfactory/pull/1475)
- add dataprep [PR](https://github.com/gdsfactory/gdsfactory/pull/1470)
- `centre` can now also be specified when `port` is used when using add_port. [PR](https://github.com/gdsfactory/gdsfactory/pull/1478)
- Add corner rounding to dataprep notebook [PR](https://github.com/gdsfactory/gdsfactory/pull/1477)

- add gf.geometry.fillet and gf.geometry.boolean_polygons [PR](https://github.com/gdsfactory/gdsfactory/pull/1464)

- add modulator example [PR](https://github.com/gdsfactory/gdsfactory/pull/1463)

- add `Component.offset` [PR](https://github.com/gdsfactory/gdsfactory/pull/1462)

- make sure via stack fits at least one via [PR](https://github.com/gdsfactory/gdsfactory/pull/1461)
- add `Component.get_layer_names`
- make rich-click and optional dependency