Gdsfactory

- remove pytest from `requirements.txt` as it's already on `requirements_dev.txt`
- Ensure consistent u and z bounds when meshing a uz cross-section [PR](https://github.com/gdsfactory/gdsfactory/pull/871)

- expose uz_mesh functions [PR](https://github.com/gdsfactory/gdsfactory/pull/869)

- fixes ComponentReference.translate() [PR](https://github.com/gdsfactory/gdsfactory/pull/858)
- Keep reference names on copy, and allow setting on init [PR](https://github.com/gdsfactory/gdsfactory/pull/859)
- Ensures that reference names are retained when copying a component
- Fixes an issue when a ComponentReference's name is set before it has an owner
- Adds name as a parameter to ComponentReference's constructor, so it can be set on initialization
- Fixes serialization of numpy arrays such that they are retained as numeric types (this was also the old, gdsfactory 5.x behaviour). Increases the default maximum of digits retained when serializing arrays from 3 to 8 (this could cause side effects if not enough digits are retained, and 8 should still be plenty to ensure consistency across machines... 1e-8 is the default atol threshold in np.isclose()). [PR](https://github.com/gdsfactory/gdsfactory/pull/860)
- Devsim plugin with GMSH plugin backend [PR](https://github.com/gdsfactory/gdsfactory/pull/861)

- add trim [PR](https://github.com/gdsfactory/gdsfactory/pull/855)

- fix import ports from siepic pins [PR](https://github.com/gdsfactory/gdsfactory/pull/854)
- add adiabatic taper [PR](https://github.com/gdsfactory/gdsfactory/pull/853)
- Fix shortcut installation script [PR](https://github.com/gdsfactory/gdsfactory/pull/851)

[6.0.0](https://github.com/gdsfactory/gdsfactory/pull/833)

- port gdsfactory from gdspy to gdstk: faster booleans, loading and writing GDS files.
- remove Inheritance of Component, ComponentReference, Polygon, Label from gdspy
- use gdstk.Label and gdstk.Polygon directly (no inheritance)
- Label.origin instead of Label.position
- ComponentReference, has rows and columns to represent removed `CellArray`
- add loss model for modesolver [PR](https://github.com/gdsfactory/gdsfactory/pull/831)
- fixes [PR](https://github.com/gdsfactory/gdsfactory/pull/835)
* remove deprecated aliases
* fix to_3d
* fix quickplo
- Fix gmeep get_simulation center issue [PR](https://github.com/gdsfactory/gdsfactory/pull/834)
- get_polygons [PR](https://github.com/gdsfactory/gdsfactory/pull/846)
- replace deprecated reflect by mirror [PR](https://github.com/gdsfactory/gdsfactory/pull/838)
- remove aliases [PR](https://github.com/gdsfactory/gdsfactory/pull/835)

- rename add_fidutials to add_fiducials (it was misspelled before) [PR](https://github.com/gdsfactory/gdsfactory/pull/827)