CSV output

[garfieldnate]

Would it be possible to do CSV output with all of the AM-specific information for several classifications at once, e.g. leave-one-out resulting in a single CSV? This would be incredibly useful.

Next best thing would be a script to convert the Weka output to CSV. We need predictions (already possible with default Weka CSV output), gangs, and analogical sets.

[garfieldnate]

Not sure why Weka has a separate method for printing the header, but it's not suitable for printing the CSV column headers. The doPrintClassification method calls the actual classifier(!), so if we were to print the header in doPrintHeader, we wouldn't be able to output three separate CSV reports.

[garfieldnate]

Game plan:

• Add AnalogicalModelingOutput option to output CSV; put this option first at the top of the list of options.
• Print summary, gangs, analogical set, and predictions in CSV format if specified.
• Add first-line comment to each CSV specifying how to load the document with Pandas.
• Add a Python script that consolidates outputs into single CSV's.
• Update the documentation screenshot of AnalogicalModelingOutput config and add a note about getting Pandas-ready output. Document the use of the script, as well.

[garfieldnate]

Note that I'd also like to fix #34 and add fix up getResults (fix tooltip, explain why it's there, warn that it's not thread-safe) before releasing.