Add NCI complete neoantigen screen (iScience 2022 S6) as an immunogenicity variant

DESCRIPTION: document neoag_tested_{mmu,hsa} + flag 6186 mouse CEDAR rows mislabelled as human

Add neoag_tested_hsa: 717 HLA-restricted rows from the same IEDB mouse export (HLA-Tg mice + human hosts)

Add neoag_tested_mmu: 1977 murine tested neo-epitopes from IEDB (mhc_species=MusMusculus)

Publish TCGA neoantigens; add data-catalog infographic

thymus: add human thymic self-peptidome (source #1 refill)

data(proteome): add 16 bacterial + viral reference proteomes

neoag: primary datasets take precedence over CEDAR/Neopep; trim blank cols from iedb_labeled

DESCRIPTION: label iedb_labeled as the ipred training set (#7)

Rework #9 into workhorse neoag DB (tested + candidates) + HLA population freqs

Add v1 data compendium: immunogenicity labels/benchmarks + similarity references

Add pMHC dataset: epitope-MHC binding from IEDB

initial commit