I feel like we gloss over this a lot, but I just h...

# announcements

[groostav]

I feel like we gloss over this a lot, but I just had two consecutive dumb bugs pointed out to me by kotlin + intellij: one was because Sequence doesnt extend Iterable, it correctly induced a type error in the code I tried to write, and the other is the "unused variables" highlighting in intelliJ pointed out that I'd screwed up my one-producer-one-user SSA-ish method. I like these tools a lot 🙂