Merge pull request #620 from qidane/spec_clean_on_dev_4_4

Spec clean on dev 4 4
Merge pull request #647 from rleigh-dundee/xsdfu-cleanup-dev44
Merge pull request #656 from rleigh-dundee/xsdfu-schema201206-dev44
Merge pull request #826 from joshmoore/py-cli-fixes

Python & CLI fixes
Update submodules