Amset

Enhancements:

- `--gnuplot` option added to transport plotter to allow writing the plot data to simple
text files.

Enhancements:

- Amset can now be run from a band_structure_data.json file. This should contain the
keys "band_structure" and "nelect".

Bug fixes:

- Improved support for spin-polarized calculations.
- Fixed projection overlaps.

Enhancements:

- `--n-type` and `--p-type` options added to transport, mobility, and convergence plotters.
- Power factor added to transport and convergence plotters.

Bug fixes:

- Fix for mean free path scattering (kbspooner).
- Fix for piezoelectric scattering.
- Fix for `cache_wavefunction = False` with non-SOC wavefunctions.
- Specify numba version for interoperability with interpolation package.

New features:

- Added tool to plot transport properties (`amset plot transport`).
- Added tool to plot mobility in more detail (`amset plot mobility`).
- Added tool to plot convergence (`amset plot convergence`).
- Added option to highlight scattering rates by the derivative of the Fermi–Dirac
thought `amset plot rates <filename> --dfde`.

Enhancements:

- Reduce memory requirements when `cache_wavefunction = False`.
- Don't write output files if `file_format = None`.

Bug fixes:

- Re-enabled CRTA and MFP scattering.
- Don't use multiprocessing with basic scatterers.
- Fix direction dependent effective masses.

Enhancements:

- Faster wave function overlap calculation using numba jit.
- Better management of memory and error reporting in subprocesses
- Automatically handle memory errors when caching wave function coefficients.

New features:

- Multiprocessing now used in the calculation of scattering rates. Number of processes
controlled using the `nworkers` option.

Bug fixes:

- More robust extraction of deformation potentials.
- Only use ascii characters in output log files.