General Updates

• Added tox to serve as the unit testing infrastructure, and changed which unit tests were run (see the github actions to see what exactly is running)
• Added tests to check future versions of numpy and astropy
• Added back in the remote data unit tests

xarray_to_cdf

• Added an ISTP check to determine is attribute and variable names are compliant

cdfwrite

• Clearer error message surrounding data type conversions to CDF data types