g2_wind_dir
Merge pull request #6 from bblay/g2_wind_dir

grib2 / cf 'wind (from) direction'
field code update

fieldcode refactor
Merge pull request #8 from marqh/fcodes

field code update
fcodes improved
Merge pull request #9 from marqh/moreFcodes

fcodes improved
Six new translations cf(name,units)->um(lbfc) to replace older Iris name-only text rules.
Merge pull request #7 from pp-mo/replace_name2lbfc_rules

Added name+units->lbfc definitions to replace Iris rules matching by name alone.
33001 update