Add lightweight grib wrapper
Review actions: docstring improvements and more
Correct pep8 failure that slipped through
Further review actions
Tests tweaks
Add another get key value special case
Fix a comment typo. No code is changed in PR!
Merge pull request #1310 from ocefpaf/fix_typo

Fix a comment typo.
Merge pull request #1303 from dkillick/lightweight_grib

Add lightweight grib message wrapper
ENH: Added lazy aggregator support for STD_DEV
Merge pull request #1297 from cpelley/lazy_stdev

ENH: Added lazy aggregator support for STD_DEV
New GRIB2 load convert mechanism
Raise TranslationError exceptions + doc-string
Initial unit mock tests