WaniKani Lesson User Synonyms 2
Adds User Synonyms to the lessons page. Adds User Synonyms and Notes to unlearned item pages. This is an update of the version that was originally provided by @kobayashi (Takuya Kobayashi) and has been adapted to work with a newer version of WaniKani. The original "WaniKani Lesson User Synonyms" in version 0.1.2 has been broken since November 2017.