- [X] method to find the `formula_terms` and return the variables - [X] add some tests - [X] PyPI release - [X] conda-forge release - [ ] class to read a netCDF file and create the `z` coordinate - [ ] build docs - [ ] implement [ocean double sigma coordinate](http://cfconventions.org/Data/cf-conventions/cf-conventions-1.0/build/apd.html) - [ ] implement [ocean sigma over z coordinate](http://cfconventions.org/Data/cf-conventions/cf-conventions-1.0/build/apd.html)
formula_termsand return the variableszcoordinate