Sorry that I didn't post a devlog since it was a very minor change, but it's related to this BGG forum post: https://boardgamegeek.com/thread/3642007/calm-mind-ii-ability
TLDR: I changed Calm Mind II wording to be less confusing (same exact effect). It had no bearing on the gameplay so didn't even count it as a new version.
Basically, I originally used the word Threshold at the start of the Calm Mind II ability (original: "Threshold reduced to 1 Knowstone"), which could be confused as referencing The Threshold deck, not the Knowstone threshold stated in Calm Mind I . So, now Calm Mind II reads as an improved version of Calm Mind I, "Improve Calm Mind by lowering its Knowstone threshold from 2 to 1."
In hindsight, if I were to change it again (maybe in another version) and it would fit I could change the word "threshold" to "requirement" to completely remove any and all confusion.