dxFeed API changes
* BUG FIX: Potential reordering of events when multi-threaded executor is used
* Introduce DXEndpoint class for managing of DXFeed (connect/disconnect/close). DXFeed.createConnectedFeed(...) is now deprecated. Use DXEndpoint.create().connect(...).getFeed() instead.
* Introduce DXPublisher to publish events.
* New fields added into Profile event: "StatusReason", "HaltStartTime", "HaltEndTime".
* Schedule API: add more methods for searching.
* Schedule API: add reset time property.
* TimeAndSale.isTrade() property was renamed into isValidTick(). (Old getter & setter were deprecated and will be removed in future.)
+ Lots of internal changes for QDS infrastructure components