Gdsfactory

- remove TECH, use gf.get_constant instead
- Add optional decay cutoff argument to write_sparameters_meep [issue](https://github.com/gdsfactory/gdsfactory/issues/779)

- add `gf.cross_section.metal_routing` and use `metal_routing` string instead of function for metal routing functions [PR](https://github.com/gdsfactory/gdsfactory/pull/778)
- Component.remove_layers returns flat copy when hierarchical=True

- upgrade tidy3d-beta from 1.7.0 to 1.7.1
- straight_heater_meander accepts straight_widths

- add devsim from pypi [PR](https://github.com/gdsfactory/gdsfactory/pull/776)
- dbr_tapered rewrite [PR](https://github.com/gdsfactory/gdsfactory/pull/775)
- Recursively netlist transformed (flattened) references [PR](https://github.com/gdsfactory/gdsfactory/pull/772) enables recursive netlisting of references which have been transformed and flattened via the flatten_offgrid_references decorator, such that they can be properly simulated, i.e. with sax.
- Don't re-apply PDK decorator in get_component [PR](https://github.com/gdsfactory/gdsfactory/pull/773)

- fix gf tool install when file already exists [PR](https://github.com/gdsfactory/gdsfactory/pull/769)

- remove Port.uid [PR](https://github.com/gdsfactory/gdsfactory/pull/768)
- add gf.components.array(add_ports=True)