mark - test_get_datetime working
mark - before removing value and bounbds datetime from temporal dimension init
mark - removing format_time from temporal dimension
mark - test getnumtime working
mark - extents are now working
mark - removed _get/value/bounds_datetime_
mark - before removing commented code from nctemporaldimension and tests
mark - removed commented code
mark - before removing nctemporalgroupdimension imports
mark - expected netcdf failures
mark - before modifying crs
mark - testing