include PyQt as optional dependency to give also a graphical interface

Compute the diffs between two big CSV files

Name		Name	Last commit message	Last commit date
Latest commit History 16 Commits
README.org		README.org
csvdiff.py		csvdiff.py
setup.py		setup.py
test.py		test.py
test_csv1.csv		test_csv1.csv
test_csv2.csv		test_csv2.csv

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