Ann-solo

- Fix help message for Python 3.7

- Correctly follow the mzTab specification to export PSM spectrum references

- Feature hashing to convert high-resolution spectra to vectors
- GPU-assisted ANN searching via Faiss
- Batch query processing
- Cython-powered splib spectral library reading
- Extracted spectrum processing to the spectrum_utils package

- Increase the default minimum group size for the subgroup FDR procedure to 20 SSMs

- Write ProteomeXchange-compliant mzTab files

- Display the readme using Markdown on PyPI
- Don't include ini files in the build