Mavisim

Final supported version for 1.0.x (Fourier based PSFs) before moving to 1.1.x (E2E PSFs). The [readthedocs](https://mavisim.readthedocs.io/en/latest/) will be updated as well, so for legacy docs you can use the "version" menu in readthedocs to find the [v1.0.3 docs](https://mavisim.readthedocs.io/en/v1.0.3/).

- Fourier-psf based simulations,
- Aligned with [Monty et al](https://arxiv.org/abs/2107.13199) MNRAS publication.