Fixed use of undefined exception
Merge pull request #1100 from esc24/commanderrfix

Fixed use of undefined exception
Clarify Cube methods which do not support lazy evaluation.
Merge pull request #1102 from rhattersley/clarify-non-lazy

Clarify Cube methods which do not support lazy evaluation.
Ocean sigma over z NetCDF loading.
Review actions.
Merge pull request #1105 from bjlittle/refactor_ocean_sigma_over_z

Ocean sigma over z NetCDF loading.
Concatenate reporting
Improved error messages on concat failure