First stable version of pyFAI: v2023.1.

One of a few ways to install this release with pip:

pip install pyFAI==2023.1.0

Release notes and important changes since 0.21:

Developer and packager tools:
- Switch build system from numpy.distutils to meson-python
- Keep the former setup.py for compatibility reasons: it will be removed in a future release
- Drop Python 3.6 (default parameters in namedtuple feature used)
- Require silx 1.1 (for OpenCL), scipy and matplotlib
GUI side:
- several minor improvements in pyFAI-calib2
- Fixed calibration in jupyter-lab
Core improvements:
- Refactoring of the Geometry class
- Geometry pseudo-inversion optimization
- Improved support from Medipix-based Lambda-detectors
- New detectors from Dectris (Pilatus 900k and Eiger 250k)
- Support Nexus format in output: NXmonpd and NXcansas
- Single-threaded CSC sparse matrix multiplication engine
Improved uncertainty propagation:
- Refactor error model management (uses enum)
- Hybrid error model (azimuthal for sigma-clipping but reports Poissonian noise)
- Export peakfinder data to the CXI format (used by CrystFEL)
Improvement in the doc:
- Update installation instructions
- Multi-threaded integration tutorial
- GPU implementation tutorial
Facts and figures:
- 400+ commits, 100 PR
  +with the contribution of:
  Clemens Prescher,
  Elena Pascal,
  Jérôme Kieffer,
  Malte Storm,
  Marco Cammarata,
  Michael Hudson-Doyle,
  Picca Frédéric-Emmanuel,
  Rodrigo Telles,
  Thomas A Caswell,
  Tommaso Vinci,
  Valentin Valls,
  Wout de Nolf.

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