[BitKonan] OrderBook and Ticker service for BitKonan Exchange
Merge pull request #690 from PiotrLadyzynski/develop

[BitKonan] OrderBook and Ticker service for BitKonan Exchange
[BitKonan] Example API usage
Merge pull request #692 from PiotrLadyzynski/develop

[BitKonan] Example API usage
Remove ExchangeException prefixes
Merge pull request #693 from zholmes1/develop

Remove ExchangeException prefixes
[Cryptsy] Public/private market data service

Cryptsy has an authenticated market data service that returns much more
comprehensive data than the public data service. This fix overrides
getPollingMarketDataService so that it returns the public market data
service if no API key has been set.
Merge pull request #695 from zholmes1/develop

[Cryptsy] Public/private market data service
rename so unit tests are run
code format [ci skip]
updated text for 2.1.0 release [ci skip]
[maven-release-plugin] prepare release xchange-2.1.0
[maven-release-plugin] prepare for next development iteration
developer tag in pom required for Maven Central deploy
manual rollback to 2.1.0-SNAPSHOT
atlasats cleanup [ci skip]
[maven-release-plugin] prepare release xchange-2.1.0
[maven-release-plugin] prepare for next development iteration
fix comments and method of Bittrex market data service
Merge remote-tracking branch 'upstream/develop' into develop