Randomgen

This is a compatibility release.

* Support for Cython 3
* Initial support for NumPy 2

* Fixed a bug that affected the `jumped` method of `Xoroshiro128` where the `**` version was swapped with the standard version.
* Fixed a bug where `SeedSequence` was not copied when advancing generators using jumped.
* Small compatibility fixes for change in NumPy.
* Changes the documentation theme to sphinx-immaterial.
* Added builds for Python 3.11.
* Increased the minimum Python to 3.8.

This release contains a single enhancement:

* Enable randomgen bit generators to be used with NumPy's Generator or RandomState.

This is a major release that removes the deprecated classes ``Generator`` and ``RandomState``.

This is a minor release that fixes one bug that is hard to encounter and improves installation.

The one bug fix affects PCG-type generators `advance` when using Windows or a 32-bit system and advancing more than 2**64 steps.

This release removed features not available in Python 3.6 so that the supported Pythons include 3.7 - 3.9.