Klayout

For release notes see [0.29.0 release notes](http://www.klayout.de/development.html#0.29.0)

For downloads of Windows, Linux and MacOS packages see [KLayout download page](http://www.klayout.de/build.html).

Including Python 3.12 in Windows builds for PyPI "klayout" module.

Bumped version once again for correct source distribution on PyPI

Bumped version on PyPI for proper python stubs

For release notes see [0.28.17 release notes](http://www.klayout.de/development.html#0.28.17)

For downloads of Windows, Linux and MacOS packages see [KLayout download page](http://www.klayout.de/build.html).

For release notes see [0.28.16 release notes](http://www.klayout.de/development.html#0.28.16)

For downloads of Windows, Linux and MacOS packages see [KLayout download page](http://www.klayout.de/build.html).