- fix mzi with new routing defaults [PR](https://github.com/gdsfactory/gdsfactory/pull/1496) - better error messages when vias do not fit in `via_stacks`
- better `via_stack_with_offset` [PR](https://github.com/gdsfactory/gdsfactory/pull/1494) - adding radius as info for the section based ring [PR](https://github.com/gdsfactory/gdsfactory/pull/1493)
6.72.1
- fixes to `gf.components.ring_section_based` [PR](https://github.com/gdsfactory/gdsfactory/pull/1489)
6.72.0
- add `gf.components.regular_polygon` [PR](https://github.com/gdsfactory/gdsfactory/pull/1487) - add function to calculate FSR [PR](https://github.com/gdsfactory/gdsfactory/pull/1488)
6.71.0
- mzi does not rename electrical ports [PR](https://github.com/gdsfactory/gdsfactory/pull/1485) - add klayout fill [PR](https://github.com/gdsfactory/gdsfactory/pull/1484)