Hitting CSV field limit error

This is a brilliant tool, thanks. However, I found due to the size of some of my fields that I was hitting the limits in the csv module i.e. getting "_csv.Error: field larger than field limit (131072)". I solved this by inserting csv.field_size_limit(sys.maxsize) into csv2es.py as per http://stackoverflow.com/questions/15063936/csv-error-field-larger-than-field-limit-131072
