WOD netCDF file support

[edwardking207]

Presumably the WOD netCDF serialisation of the profiles aligns with the definitions in http://data.nodc.noaa.gov/woa/WOD/DOC/wodreadme.pdf. If so then perhaps it would not be too difficult, but very useful, to support reading of the netCDF files in the WodProfile class as well. Given that we need scientists to adopt open, self-describing and portable data formats to enable an open data future, adding netCDF support to wodpy would encourage and facilitate a key (and influential) science community to make that transition.

[bkatiemills]

This is definitely a possibility. As @s-good was mentioning to me the other day, there are apparently a few different netCDF formats in play at the moment, if I understood correctly; if we can nail down precisely which of these we're interested in, preferably with an unpacked example that I can test a forthcoming unpacking implementation against, I think this would be a great feature to support.