Powering up/down really had me confused on how to handle them. For now I've ignored both of them, but on powerdowns to your own account, I was triggering events. I think it would be more accurate to make it so that if any account powers down to you (withdrawl routes) it should trigger an event since you are receiving liquid funds.

How are you handling VESTs received? I was thinking of getting the historical pricing of them somehow and use the equivalent HIVE value at first, but the more I think on it, the more I feel like ignoring that would be best, since it'd get captured by the powerdown amount and no need to work out historical vests pricing.