Peirce's Criterion: command-line tool

I've written a simple command-line tool filter out statistical outliers using the rigourous Peirce's Criterion.

The algorithm has been available in Sasa for awhile, and will be in the forthcoming v0.9.3 release.

I've also packaged the command-line tool binary for running Peirce's Criterion over multi-column CSV files (LGPL source available here).

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async.h - asynchronous, stackless subroutines in C

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