Merge pull request #501 from sutra/develop

Implement BTCChina getOrder method.
Fix ItOrder createdTime date parsing
Organise imports
Merge pull request #502 from jheusser/fix_itbit_dateparsing

ItBit: fix microsecond precision dates in trade history
update xchart dep
Merge branch 'develop' of github.com:timmolter/XChange into develop
[Bitcurex] Use different objects for PLN and EUR
Add PLN to BitcurexFunds
Add PLN to BitcurexFunds - tests
Create ExchangeSpecification for PLN, update BitcurexBasePollingService
Fix Bitcurext PLN
Bitcurext PLN - examples
Merge pull request #505 from rafalkrupinski/bitcurex

Bitcurex PLN