Change sorting order for hitbtc
Merge pull request #482 from jheusser/fix_change_sort_hitbtc

Hitbtc: change sorting order for public trades
updated xeiam url
Add implementation of BtcTrade API.
Merge pull request #481 from jamespedwards42/develop

Fix Cryptsy Broken By Removal Of Trade Id
Merge pull request #483 from sutra/develop

Add implementation of BtcTrade API.
Merge branch 'develop' of github.com:timmolter/XChange into develop
Merge branch 'develop' of github.com:timmolter/XChange into develop
Add BTCTradeSession to ensure the polling service instancs, which using same API key, share the same secret data and nonce, and make all requests on one API key synchronized.
Add license header to the new files.
#485 - reenabling tests and fixing ignored id propery
#485 - renaming also missing 1 of 4 test files
#485 - wrong last price expectation in test
#485 - logging endpoint configured for test scope
#488 - making cryptsy protected against empty (null) orders (NPE)
Merge pull request #486 from krystiannowak/develop

#485 - Tests are not run in xchange-cryptsy due to wrong file naming
Merge pull request #484 from sutra/develop

Add BTCTradeSession to ensure the polling service instancs, which using same API key, share the same secret data and nonce, and make all requests on one API key synchronized.
#489 - fix against NPE when there are no recent trades
Added CLOAK/BTC and CRYPT/BTC
Merge pull request #490 from krystiannowak/develop

#489 - fix against NPE when there are no recent trades