Add private/extended api calls #1
Description
Cryptopia has 2 API sets, it would be good to implement the private/extended API set as detailed here:
https://www.cryptopia.co.nz/Forum/Thread/256
This includes the following new calls, possibly under an Extended class:
- getBalance()
- getDepositAddress()
- getOpenOrders()
- getTradeHistory()
- getTransactions()
- submitTrade()
- cancelTrade()
- submitTip()
- submitWithdraw()
- submitTransfer()