Hello!
I'm surprised to have not found quantopian's open source trading library (Python) applied to Bitcoin?
It can be found here:
https://github.com/quantopian/ziplineI don't have time to do this myself at this moment but if I cannot find something like that I'll write it myself.
www.quantopian.com has a lot of trading algos that I think could be really interesting to bitcoin traders.
(Btw, I'm not affiliated with Q; if you don't know what it is, check it out and you'll calm down if you're suspicious about my endorsements)
