BREAKING CHANGE: drop support for X_DIM and friends, remove deprecated backend functions#393

FlorianDeconinck merged 2 commits into

NOAA-GFDL:developNOAA-GFDL/NDSL:developfrom

romanc:romanc/deprecations-feb-releaseromanc/NDSL:romanc/deprecations-feb-releaseCopy head branch name to clipboard