Created using Colab

Notebook update (#66)

updating notebook (#65)

Merge pull request #64 from PolymathicAI/fix/spectrum_crop

fix edge case

fix assignment

make padding operate on Spectrum class; apply padding in codec

preprocessing in torch

add pad length for SDSS and DESI spectra

add spectrum preprocessing fns

Readme updates (#54)

updating notebook

Created using Colab

Readme updates (#53)

Readme updates (#52)