Fix coding of maximum and minimum time-stats in Grib2 save.
reordered phenomenon dictionaries
Add minimal test for grib 4.8 template statistic coding.
Modified attribute behaviour for netCDF save.
license header date
Added more complete tmerc to cartopy translation
Review actions
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Merge pull request #719 from esc24/tmerc_as_cartopy

Added more complete tmerc to cartopy translation.
Merge pull request #697 from pp-mo/grib_maxmin

Fix coding of maximum and minimum time-stats in Grib2 save.
Merge pull request #694 from marqh/dict_order

Reordered phenomenon dictionaries for future ease of review.
implemented y-axis inversion on "positive: down" specified in vertical coord attrs
Merge pull request #522 from dkillick/pressure_invert_yaxis

y-axis inversion for vertical coords
Merge pull request #711 from esc24/global_attr_third

Modified attribute behaviour for netCDF save.
ENH: Added support for checking netcdf file saving

This commit adds permissions checking and path checking to the netcdf
save within iris.  This tackles the generalised runtime error which
results from netCDF4.