Py-pde

What's Changed
* Cleaned up `get_boundary_conditions` by david-zwicker in https://github.com/zwicker-group/py-pde/pull/319
* Improved error message by david-zwicker in https://github.com/zwicker-group/py-pde/pull/320
* Improved typing and documentation by david-zwicker in https://github.com/zwicker-group/py-pde/pull/322
* Improve writing to storage in multiprocessing environment by david-zwicker in https://github.com/zwicker-group/py-pde/pull/325
* Added possibility to evaluate derivative of smoothed data by david-zwicker in https://github.com/zwicker-group/py-pde/pull/326
* Fixed conservative tensor divergence in spherical coordinates by david-zwicker in https://github.com/zwicker-group/py-pde/pull/327
* Added mpi4py in requirements by david-zwicker in https://github.com/zwicker-group/py-pde/pull/328
* Improved typing by david-zwicker in https://github.com/zwicker-group/py-pde/pull/329


**Full Changelog**: https://github.com/zwicker-group/py-pde/compare/v0.22.5...v0.22.6

What's Changed
* Specify python version for binder by david-zwicker in https://github.com/zwicker-group/py-pde/pull/316
* Fixed bug in MPI multiprocessing of vector-valued fields by david-zwicker in https://github.com/zwicker-group/py-pde/pull/317
* MPI bcs by david-zwicker in https://github.com/zwicker-group/py-pde/pull/318


**Full Changelog**: https://github.com/zwicker-group/py-pde/compare/v0.22.4...v0.22.5

What's Changed
* Minor improvements by david-zwicker in https://github.com/zwicker-group/py-pde/pull/308
* Improved documentation by david-zwicker in https://github.com/zwicker-group/py-pde/pull/313
* Adjusted to newer numba_mpi by david-zwicker in https://github.com/zwicker-group/py-pde/pull/314
* Improve diagnostic output of pde.PDE by david-zwicker in https://github.com/zwicker-group/py-pde/pull/315


**Full Changelog**: https://github.com/zwicker-group/py-pde/compare/v0.22.3...v0.22.4

What's Changed
* Added py-pde logo to the repository by david-zwicker in https://github.com/zwicker-group/py-pde/pull/300
* Improved traceback when exception occurred during missing cache hit by david-zwicker in https://github.com/zwicker-group/py-pde/pull/298
* Improved documentation by david-zwicker in https://github.com/zwicker-group/py-pde/pull/303
* Improved operators with complex boundary conditions by david-zwicker in https://github.com/zwicker-group/py-pde/pull/304
* Fixed two edge cases in OnlineStatistics and progress bars by david-zwicker in https://github.com/zwicker-group/py-pde/pull/305
* Support field collections in MPI by david-zwicker in https://github.com/zwicker-group/py-pde/pull/306
* Improved field interpolation by david-zwicker in https://github.com/zwicker-group/py-pde/pull/307


**Full Changelog**: https://github.com/zwicker-group/py-pde/compare/v0.22.2...v0.22.3

What's Changed
* Reduced error tolerance of adaptive explicit solver by david-zwicker in https://github.com/zwicker-group/py-pde/pull/285
* Fixed a bug in applying BCs defined by expressions by david-zwicker in https://github.com/zwicker-group/py-pde/pull/287
* Improved documentation by david-zwicker in https://github.com/zwicker-group/py-pde/pull/288
* Improved documentation of BCs by david-zwicker in https://github.com/zwicker-group/py-pde/pull/289
* Removed some deprecated functions by david-zwicker in https://github.com/zwicker-group/py-pde/pull/290
* Add `num_cells` property to grids by david-zwicker in https://github.com/zwicker-group/py-pde/pull/291
* Minor improvements by david-zwicker in https://github.com/zwicker-group/py-pde/pull/292
* Change default BCs by david-zwicker in https://github.com/zwicker-group/py-pde/pull/293
* Allow kwargs when evaluating evolution rates by david-zwicker in https://github.com/zwicker-group/py-pde/pull/296
* Emit warning when state has been modified strongly by david-zwicker in https://github.com/zwicker-group/py-pde/pull/297


**Full Changelog**: https://github.com/zwicker-group/py-pde/compare/v0.22.1...v0.22.2

What's Changed
* Adjust adaptive time stepping so that interrupts are hit exactly by david-zwicker in https://github.com/zwicker-group/py-pde/pull/282
* `environment` now shows right packages by david-zwicker in https://github.com/zwicker-group/py-pde/pull/283
* Improved typing by david-zwicker in https://github.com/zwicker-group/py-pde/pull/284


**Full Changelog**: https://github.com/zwicker-group/py-pde/compare/v0.22.0...v0.22.1