v1.13.0rc2

What's Changed

Enhancements

• Add new v3 atm var handlers by @chengzhuzhang in #307

Bug Fixes

• Fix areacello handler unlimited dimensions error by @chengzhuzhang in #319
• Replace np.nan with FILL_VALUE in clisccp.py for cmor.write by @TonyB9000 in #328

Internal Changes

• Preserve legacy Xarray compat and join settings by @tomvothecoder in #322
• Preserve legacy Xarray data_vars settings by @tomvothecoder in #325

DevOps

• Drop Python 3.10 support by @tomvothecoder in #318

Full Changelog: v1.12.2...v1.13.0rc2