Simsopt

**Full Changelog**: https://github.com/hiddenSymmetries/simsopt/compare/v0.9.0...v0.9.1

What's Changed
* Add a Weight object that encapsules a scalar by florianwechsung in https://github.com/hiddenSymmetries/simsopt/pull/230
* Improvements to RegularGridInterpolant3D and C++ documentation 103 by florianwechsung in https://github.com/hiddenSymmetries/simsopt/pull/227
* Setup numpy dependency in the recommended way by mbkumar in https://github.com/hiddenSymmetries/simsopt/pull/234
* Update branch by rogeriojorge in https://github.com/hiddenSymmetries/simsopt/pull/236
* Save and load coils by landreman in https://github.com/hiddenSymmetries/simsopt/pull/235
* Principal curvatures by ejpaul in https://github.com/hiddenSymmetries/simsopt/pull/232
* Expanded coil documentation by rogeriojorge in https://github.com/hiddenSymmetries/simsopt/pull/237
* JSON serialization by mbkumar in https://github.com/hiddenSymmetries/simsopt/pull/231


**Full Changelog**: https://github.com/hiddenSymmetries/simsopt/compare/v0.8.0...v0.9.0

What's Changed
* The behaviour of fix_all is modified to fix global DOFs. To fix local DOFs use local_fix_all. By mbkumar in https://github.com/hiddenSymmetries/simsopt/pull/222
* properties for order, stellsym, nfp in curverzfourier by florianwechsung in https://github.com/hiddenSymmetries/simsopt/pull/225
* Skip matplotlib-dependent tests if it's not installed by StanczakDominik in https://github.com/hiddenSymmetries/simsopt/pull/226
* Multifilament coil approximation by florianwechsung in https://github.com/hiddenSymmetries/simsopt/pull/223
* MPI barrier to avoid wout not found error by landreman in https://github.com/hiddenSymmetries/simsopt/pull/224
* Virtual casing by landreman, florianwechsung, and mbkumar in https://github.com/hiddenSymmetries/simsopt/pull/209

New Contributors
* StanczakDominik made their first contribution in https://github.com/hiddenSymmetries/simsopt/pull/226

**Full Changelog**: https://github.com/hiddenSymmetries/simsopt/compare/v0.7.4...v0.7.5

What's Changed
* Curve-Curve distance improvements and introduction of Curve-Surface distance by florianwechsung
* Reduce extensive CI time by mbkumar
* Add thirdparty folders to sdist by mbkumar
* Remove graph prefix by mbkumar


**Full Changelog**: https://github.com/hiddenSymmetries/simsopt/compare/v0.7.3...v0.7.4

What's Changed
* Fieldlines from vmec by landreman
* added plot DAG test by andrewgiuliani
* Nptyping fix by mbkumar
* Remove assert in tracing.cpp by florianwechsung
* Use slots for DOFs by mbkumar
* Small performance tweaks by florianwechsung


**Full Changelog**: https://github.com/hiddenSymmetries/simsopt/compare/v0.7.2...v0.7.3

What's Changed
* adding cpp implementation of vector potential with vjps by andrewgiuliani in https://github.com/hiddenSymmetries/simsopt/pull/201
* Fix: graph framework dofs out of sync by landreman in https://github.com/hiddenSymmetries/simsopt/pull/205
* added print_dag functionality by andrewgiuliani in https://github.com/hiddenSymmetries/simsopt/pull/202
* Removed deprecated jax commands by landreman in https://github.com/hiddenSymmetries/simsopt/pull/207
* Deprecated optimizable and dofs modules deleted by mbkumar in https://github.com/hiddenSymmetries/simsopt/pull/208


**Full Changelog**: https://github.com/hiddenSymmetries/simsopt/compare/v0.7.1...v0.7.2