minor fix to normalize-by-median, cleanup of saturate
fix indent in normalize-by-median
Merge pull request #586 from ged-lab/cleanup/normalize_and_saturate

minor fix to normalize-by-median, cleanup of saturate
Add failing tests for Issue #174 (TDD)
Improve quality of error message
Adopt ValueError as the desired Python exception and make more consistent with other negative tests
make diff_pylint_report tweaks
Fix Issue #174 - ktable.get(wrong_length_string) gives core dump
Update ChangeLog
Modify some user-visible output strings