0.2.0-alpha14

Available on NuGet.

Changes:

• Add Order.Fills property to support 'FULL' new order response type.
• Add IWebSocketStream abstraction to support combined streams.
  • Create new layer between IWebSocketClient and BinanceWebSocketClient.
  • BREAKING: Change SubscribeAsync methods to StreamAsync extensions (for non-combined).
• Add WebSocket4Net and WebSocketSharp IWebSocketClient implementations (for Windows 7 support).
  • BREAKING: Move Binance.Api.WebSocket namespace to Binance.WebSocket.
• Change package/release versioning for better NuGet support.
• Update request rate limit weights.