generates a word frequency list from japanese utf-8 text
depends on kuromoji-unidic-kanaaccent from maven
invoke java -jar analyzer.jar mycorpus.txt > myfrequencylist.txt
licensed under a public domain–like permissive license
particles, auxiliary verbs, etc are blacklisted from output
use the companion program to combine lists made from different sources: https://github.com/wareya/normalizer