Test cases for the nctiles pipelines in NCTiles.jl and gcmfaces/nctiles.

• README global attribute example
• available_diagnostics.log example
• grid_float32/ model grid example (binary, llc90 grid)
• diags/ model output example (binary, llc90 grid)
• diags_interp/ regular grid example (binary, 720x360)

Sample output from the gcmfaces original pipeline (in diags_nctiles/).

• diags_nctiles/ sample output from gcmfaces/nctiles
  • FeT.0062.nc (netcdf, one tile; 29-May-2018 vintage)
  • MXLDEPTH.0011.nc (netcdf, one tile; 01-Apr-2016 vintage)