Add difficulty ratings collected from forum datasets to items in WaniKani lessons and reviews.
当前为
See also the GitHub repository for this userscript: https://github.com/saraqael-m/WKItemDifficulty
The data is based on the data scraped from WaniKani forums. See https://community.wanikani.com/t/new-combined-user-statistics/58741
The main thread for this userscript is on the WaniKani forum: https://community.wanikani.com/t/userscript-item-difficulty-indicator-%F0%9F%9F%A2%F0%9F%9F%A1%F0%9F%9F%A0%F0%9F%94%B4/59876
