Version 1.9.0

What's Changed

Features

• perf: cache coordinate-type and handler lookups in dispatch by @henryiii in #714
• ci: run Awkward backend tests on GPU by @henryiii in #733
• perf(awkward): gather each operand's coordinates with one carry by @lgray in #741
• feat: validate coordinate names in one place, for every backend by @ikrommyd in #659
• feat: test on Python 3.15 and 3.15t by @Saransh-cpp in #745
• fix: dot/eta closer to ROOT, compare vector results with ROOT's. by @jpivarski in #36

Fixes

• fix: not_equal, is_perpendicular, and is_spacelike predicate logic by @henryiii in #713
• fix: correct awkward backend field-leak, behavior, and dict-input bugs by @henryiii in #718
• fix: correct multiple bugs in the NumPy backend by @henryiii in #719
• fix: exports crash without optional deps, Vector.like() type safety, and docstring corrections by @henryiii in #716
• fix: correct several Numba backend bugs by @henryiii in #715
• fix: symbolic sign, Max/Min, and numeric copysign in the SymPy backend by @henryiii in #721
• fix: correct overload param names, array protocol, _wrap_result precedence, duplicate alias guard by @henryiii in #720
• fix: align Lorentz/planar coordinate conventions across signatures by @henryiii in #717
• fix: do not use Self on Python 3.10 by @Saransh-cpp in #743
• fix: give a useful error when ProjectionClass*D is missing by @FanxinSun in #737

Documentation

• feat(docs): add llms.txt and Markdown page versions by @henryiii in #742

Maintenance

• chore: fix noxfile, CI pass gate, and stale config by @henryiii in #712
• Dependencies update by @eduardo-rodrigues in #724
• chore: secure CI by @henryiii in #739
• ci: use nox session for gpu ci by @Saransh-cpp in #744

New Contributors

• @lgray made their first contribution in #741
• @FanxinSun made their first contribution in #737

Full Changelog: v1.8.1...v1.9.0