NF - remove 1d restriction from cosine latitude weights
Merge pull request #571 from ajdawson/cosine-weights-2d

NF - Remove 1d restriction from cosine latitude weights
PEP8 fixes for cartography module
Merge pull request #575 from ajdawson/cartography-pep8

PEP8 fixes for cartography module
added packaged grib support WMO