AMReX-Astro/Emu: Emu v1.2

Emu is a multidimensional neutrino quantum kinetics simulation code based on the particle in cell method and parallelized for CPU or GPU supercomputing architectures.

Emu is licensed under the included BSD-3-Clause-LBNL open source license.

Change log for v1.2, referencing github issues & PRs at https://github.com/AMReX-Astro/Emu:

• Using the new particle shape factor implementation, we now redistribute particles only at the end of each timestep instead of at every runge-kutta stage (#50).

• Removed WarpX bilinear filter, since we don't need it to get stable evolution. Emu now does not include any WarpX code (#49).

• Removed WarpX shape factors. Wrote new shape factor implementation in ParticleInterpolator so we now can evolve particles within ghost cells (#48).

• We now determine the shape factor order taking into account both the user-specified order and the dimensionality of the problem so we use order 0 in the directions where the domain contains only one cell (#47).

• Fixed issue with flavor vector length so we can now run simulations with nonzero initial amounts of non-electron flavor neutrinos (#44).