Support/warn ICGEM 2.0 format #7
Description
There's apparently a new ICGEM 2.0 format ( https://icgem.gfz-potsdam.de/docs/ICGEM-Format-2023.pdf ) with small differences in the gcft records; some of those are seemingly being published already (e.g. https://icgem.gfz-potsdam.de/getmodel/gfc/96e984f23a31505411d943341767e9ff082ad2c77fbbdcba1be2e393cf35110a/EIGEN-GRGS.RL04.MEAN-FIELD.gfc ). It would be a good idea, I think, to maybe check for the icgem2.0 format line to throw an error until support is added for it.