Superscreen

What's Changed
* Add cdist_batched and .isort.cfg by loganbvh in https://github.com/loganbvh/superscreen/pull/90
* update field_at_position by loganbvh in https://github.com/loganbvh/superscreen/pull/91
* You must use `Solution.interp_fields()` to evaluate the fields within a layer, rather than `Solution.field_at_position()`


**Full Changelog**: https://github.com/loganbvh/superscreen/compare/v0.8.0...v0.8.1

What's Changed
* Update vortex.py by loganbvh in https://github.com/loganbvh/superscreen/pull/81
* Make terminals optional in TransportDevice by loganbvh in https://github.com/loganbvh/superscreen/pull/82
* Fix bugs when drain_terminal = None by loganbvh in https://github.com/loganbvh/superscreen/pull/83
* Remove optimesh by loganbvh in https://github.com/loganbvh/superscreen/pull/85


**Full Changelog**: https://github.com/loganbvh/superscreen/compare/v0.7.0...v0.8.0

What's Changed

* Jax by loganbvh in https://github.com/loganbvh/superscreen/pull/75
* Enable GPU-acceleration with Jax as an optional dependency.
* Update readme by loganbvh in https://github.com/loganbvh/superscreen/pull/76
* Terminal currents by loganbvh in https://github.com/loganbvh/superscreen/pull/78
* Much more efficient calculation of fluxoid states using the mutual inductance matrix.
* Added `TransportDevice`, a subclass of `Device` on which one can define multiple source/drain terminals for bias currents.
* Updated `Solution.field_at_position()` to use the Biot-Savart law directly.

**Full Changelog**: thttps://github.com/loganbvh/superscreen/compare/v0.6.1...v0.7.0

Added `Solution.vector_potential_at_position()`, which calculates the magnetic vector potential anywhere in space due to current flowing in a `Device`.

**Note**: I accidentally named this tag `v0.6.6` instead of `v0.6.0`.

What's Changed
* Vector potential by loganbvh in https://github.com/loganbvh/superscreen/pull/73


**Full Changelog**: https://github.com/loganbvh/superscreen/compare/v0.5.0...v0.6.6

What's Changed
* Fix k space coordinates in pearl_vortex by loganbvh in https://github.com/loganbvh/superscreen/pull/74


**Full Changelog**: https://github.com/loganbvh/superscreen/compare/v0.6.6...v0.6.1

Changes:
- Add gradient(Lambda) term and clarify documentation about the model in the context of inhomogeneous films (https://github.com/loganbvh/superscreen/pull/72).