Added Brazilian Bitcoin Index from Cointrader Monitor (https://cointradermonitor.com/api/pbb/v1/ticker) as a "BRL" Fiat source.
The index is calculated from the last price and volume from 30 brazilian exchanges. It is a well-known price index used by bitcoin brazilian users.
More information at https://cointradermonitor.com/
- BitcoinAverage seems to have historical rates for all currencies it supports
(as in, if there is spot price, there is also history).
- BitStamp now uses v2 API, also has support for EUR.
- Bitcointoyou does not seem to actually offer histories
(and `request_history` was undefined anyway)
- regenerate currencies.json