SciTools/iris — pull request #1063 by esc24 (2014-03-10 17:28:16+00:00)
Title: Saving hybrid pressure to netcdf

This PR adds the ability for Iris to save cubes with hybrid pressure aux factory (i.e. a ```atmosphere_hybrid_sigma_pressure_coordinate``` dimensionless vertical coordinate) to netcdf. In the process it also add the ability to save cubes with multiple aux factories to netcdf