Changes to loading_iris_cubes.rst, copied from PR.212
Merge pull request #326 from iedwards/extest_remove_unused_import

Unused "import unittest" removed from extests
wip, save not working
save working
results change
missing result
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removed api patch awareness
added switch
restored patch awareness
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Merge pull request #174 from bblay/grib_negft

Grib hindcast workaround
Remove obsolete dead code
Merge pull request #333 from rhattersley/del-long-name

Remove obsolete unused code (very small)
Added convert_units(), plus mod to allow arithmetic operations on compatible units and conversion of arrays of integers.
Review actions.
Abbreviated numpy namespace

All modules now use:
    import numpy as np