fixed handling of negative values for price and total amount @ bitstamp
Merge branch 'develop' of github.com:timmolter/XChange into develop
Merge pull request #515 from jamespedwards42/develop

Dynamically load cryptonit currency pairs, plus a couple of fixes.
Merge pull request #516 from andre77/develop

Bitstamp getTradeHistory: Trades with negative price value
MintPal Market Data Implmentation With Demos And Tests.