SemNetCleaner

First release

*semnetcleaner function: outputs a binarized response matrix (rows = participants, columns = responses) that's been cleaned (spell-checked and de-pluralized)

*converge function: merges one column of responses with another in a cleaned response matrix

*finalize function: removes columns with responses fewer than 2

*equate function: outputs a list of response matrices that keeps only the same responses that appear in both groups