Improved argument parsing#21

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jarusified wants to merge 4 commits intollnl:developfrom

jarusified:test-groupby

Commits on Aug 28, 2020

Improve documentation for the utils.py file
jarusified
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Commits on Aug 29, 2020

Commits on Aug 31, 2020

Add docs for --data_dir processing and some more clean up
jarusified
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