v0.1.2

First pixi-based release.

Highlights

• Build backend switched to hatchling; pixi now drives local dev/test envs.
• Package structure corrected: all subpackages ship in the wheel; nearestcentroid regridder auto-registers on import.
• Minimal CI (ubuntu-latest, pixi run test) wired up.
• pyproject.toml gains license, classifiers, keywords, and [project.urls]; dggal is now a declared runtime dependency.
• README.md expanded: install, supported grids, platform caveat, dev instructions.

Platform support

Linux only for now. The upstream dggal wheel has a flat-namespace linker issue on macOS that prevents import at runtime; waiting on an ecere/pydggal fix.

See #3 for the full change set.