It was not a silent update, it had been announced multiple times on the chat; however, your premise is right. I should have done a better job making sure no one got burnt by this.

So here's what I'll do. Firstly, I'll refund the losing bets that were than or 0.1 BTC which are:

108063, 144804, 194038 and 260011 -- for a total of 0.706916 BTC

Secondly, I'll add a max-bet field to the strategy editor so people stop implicitly relying on the site limits:

https://github.com/moneypot/webserver/issues/130


And thirdly, in the future any update of the sort, I'll make sure to version it along with a notice so people are aware of what changed, rather than needing to check the chat.