Merge pull request #2 from danvk/union-column

Show a "Union" column as in the "Beyond Venn Diagrams" paper.
Gap between legend & chart
Merge branch 'master' of github.com:danvk/concordance
More convergence on "Beyond Venn Diagrams": color scheme, data labels, legend
comma-separated values
One step closer to beyon venn
refer to correct axis class
Formatting
Merge pull request #3 from danvk/beyond-venn

Converge on "Beyond Venn Diagrams": color scheme, data labels, legend
Usage in README
Reorganize files, make modular, and correct

Now displays truly concordant calls--no more displaying concordance of
rejected calls. Does this by only passing calls through that have
the PASS filter on the; may need to verify that this is a valid
assumption by looking at output of other callers.