Release v1.2 wishlist

[nakib]

• [x] Marti's gigantic nanostructures merge.
• [x] (Revert to) low RAM version of gpu offload. Caching before disk dump requires too much RAM.
• [x] Fix load balance issue in DOS calculator, and perhaps in other places as well.
• [x] Use official fortran api from spglib
• [x] On-the-fly W
• [x] On-the-fly Y
• [ ] On-the-fly X
• [x] Hashtable for storing periodic table and isotope data structure for all isotope related data/calculation
• [ ] Add more examples (perhaps in the form of tutorials).
  • [ ] 4-phonon scattering
  • [ ] superconda
  • [ ] exciting interface
  • [ ] nanostructures
  • [ ] phonon-substitution defect scattering
• [ ] Add more tests.
• [x] FPMized blas and lapack options.
• [x] FPMized spglib option.
• [x] Ship dependencies in third party directory to allow building on machines without internet access.
• [x] Beyond Tamura ph-iso scattering. Set the better theory as default.
• [ ] Improved documentation.
• [ ] "Read the org" style website.
• [x] Add openblas option in fpm.toml. Thanks, Sebastian!
• [ ] Update to fpm v0.8.
• [ ] update to EPW v>=5.9s
• [ ] add new wannier parsers (with support for EPW's use_ws flag)
• [ ] Reproducible build with gnu guix (maybe...)
• [x] Remove cmake support because life is too short (maybe...)
• [ ] Some porting of post processing steps to julia (maybe...)
• [ ] Add superconda logo (maybe...)