NcML update task list

[brianmckenna]

outstanding

• [ ] SELFE needs standard_name for latitude and longitude
• [ ] FVCOM (extratropical) siglay is a 2D variable, but siglay is also used as an index, is this legal? example
• [ ] several datasets use cell_methods: time: point point doesn't seem to be a valid dimension, is this necessary?

  complete

• [x] example completed sub-issue

[kknee]

@brianmckenna lets add update SLOSH water level variable name from SSH_referencelevel to SSH_NAVD88 to the list. I don't have permission to edit your check list.