nimrod biaxial projection -1
Merge pull request #958 from esc24/img_tol_mpl131

Update to matplotlib 1.3.1 incl. img tolerance change
Merge pull request #913 from bblay/nimrod_biax

Ignore the nimrod ellipsoid.
Make cfchecks use local XML tables.
Merge pull request #968 from rhattersley/local-cfchecks-tables

Make cfchecks use local XML tables.
Show when no masked elements in CML.
Merge pull request #969 from rhattersley/highlight-empty-mask-cml

Show when no masked elements in CML.
Remove order from Cube XML
Removed order and mask_order from test CML files
Merge pull request #967 from rhattersley/ignore-order

Ignore data and mask order
WIP
CF aligned alternative implementation of hybrid pressure
Moved to standard name of surface_air_pressure and fixed long lines
whitespace
pp unit tests partially complete. aux_factory tests to come.
Demand coords get added as to aux_coords_and_dims.
Add round-trip tests
Saving of HybridPressure to pp.
More units tests.
Find hybrid vertical coords via factory dependencies