Drop Python 3.8, add Python 3.13, use PEP 639 SPDX license format#287

martinpopel merged 4 commits intomartinpopel-patch-2mjpost/sacrebleu:martinpopel-patch-2from

copilot/sub-pr-286mjpost/sacrebleu:copilot/sub-pr-286Copy head branch name to clipboard