Switch Travis to cartopy 0.10.0
New contributors to Iris.
anal_pep8
grib2 wind direction
new code-gen output (lic date)
ENH: Stash code to field code translation table.
MAINT: Changes based on review.
Review actions
Fix iris.util.rolling_window for degenerate masks.
Test images updated to reflect changes in MPL v1.3
Added snap=False to pcolor default args as mpl1.3 workaround
Updated license to reflect the new year
Updated cloud cover base image
Image updates where changes limited to axes positioning
Further image updates for axes postioning, pcolor snap changes
Images changed by Cartopy update
Final image changes
Example images changes
Deriving phenomena image changed following merge of #952
Matplotlib version in .travis.yml corrected to v1.3.1.