Added support for climatology bounds.
Added rules for transverse mercator grid.
Added test
Updated to v1.3 of iris test data.
Review action.
polar stereo grib
Merge pull request #521 from esc24/clim_bounds

Added netcdf load support for transverse Mercator grid mapping and climatology
Merge pull request #518 from bblay/ps_grib

polar stereo grib
v1.5.0-dev
Merge pull request #537 from bblay/v1.5.0-dev

update version to v1.5.0-dev
Added git clone depth of zero to travis CI config.
Merge pull request #539 from esc24/travis_depth

Specified depth of zero for travis ci clone
implemented y-axis inversion on "positive: down" specified in vertical coord attrs
inversion constrained to y-axis with y-like coords
as previous for custom coords
updated copyright string 2012 -> 2013