• Add tool to check which languages, scripts, and territories available in CLDR are missing in langtable
• Add all missing scripts and languages: yrl, xnr, wbp, vmw, vec, trw, trv, skr, sdh, quc, pis, pcm, myv, mus, moh, mic, mhn, ltg, lmo, lld, kxv, kpe, kgp, ken, kcg, kaj, jbo, gaa, cic, cho, ceb, cch, cad, bss, blt, Tavt blo, bgn, bgc, rhg, Rohg hnj, Hmnp Shaw, Dsrt bew, bal, arn, apc, ann, scn
• Drop Python < 3 support (using pyupgrade --py3-plus langtable.py)
• Fix some ruff and pylint warnings