Develop

See merge request !64

Add parcels env

See merge request !63

That's quite an ugly hack ...

Add gsw package

See merge request !62

- For Python 3, use conda-forge's gsw package which is
  <https://github.com/TEOS-10/GSW-Python>.
- For Python 2, install the deprecated version with pip.

Master

See merge request !61

Develop

See merge request !60

Pin nc4

See merge request !59

Pin netCDF4 to v1.2.8 everywhere

See merge request !58

v1.2.9 honors `valid_min` and `valid_max` to mask data.  This messes up
working with data that did a sloppy job in maintaining these valid
ranges.  To learn about progress, follow:

- <https://github.com/Unidata/netcdf4-python/issues/711>
- <https://github.com/Unidata/netcdf4-python/issues/703>

Develop

See merge request !57

Pin netCDF4 to 1.2.8

See merge request !56

With v1.2.9, netCDF4 suddenly honors valid_min et al to create masked
arrays.  This leads to problems with all the not-exactly-CF-compliant
files out there.

Add (python-)cdo and iris

See merge request !55

Resolve "add iris"

See merge request !54

Add python-cdo and cdo

See merge request !52

This only works with Python2 and, via a ecmwf-grib dependency, messes up
the whole env.