Pypsa

New Contributors
* fwitte made their first contribution in https://github.com/PyPSA/pypsa-eur/pull/288
* p-glaum made their first contribution in https://github.com/PyPSA/pypsa-eur/pull/299
* Qui-Rin made their first contribution in https://github.com/PyPSA/pypsa-eur/pull/306
* thesethtruth made their first contribution in https://github.com/PyPSA/pypsa-eur/pull/329
* davide-f made their first contribution in https://github.com/PyPSA/pypsa-eur/pull/350
* ebbekyhl made their first contribution in https://github.com/PyPSA/pypsa-eur/pull/370
* zoltanmaric made their first contribution in https://github.com/PyPSA/pypsa-eur/pull/374
* jpscl made their first contribution in https://github.com/PyPSA/pypsa-eur/pull/391

**Full Changelog**: https://github.com/PyPSA/pypsa-eur/compare/v0.4.0...v0.5.0

synchronisation-release
https://pypsa-eur.readthedocs.io/en/latest/release_notes.html

What's Changed
* expression: add solution attribute to expression class by FabianHofmann in https://github.com/PyPSA/linopy/pull/249
* constraints & varaibles: add formatted attribute getter by FabianHofmann in https://github.com/PyPSA/linopy/pull/250
* Matmul and dot operation by FabianHofmann in https://github.com/PyPSA/linopy/pull/251
* test_optimization: print set of tested solvers by FabianHofmann in https://github.com/PyPSA/linopy/pull/252
* run ruff by FabianHofmann in https://github.com/PyPSA/linopy/pull/253


**Full Changelog**: https://github.com/PyPSA/linopy/compare/v0.3.7...v0.3.8