v2.3.0

• [Client] Added support for web socket communication channel (thanks to nowakpiotr)
• [Core] Huge performance optimizations (thanks to JanEggers)
• [Client] Fixed an issue when calling DisconnectAsync and the connection is already closed.
• [Core] Added several new interfaces
• [Core] Added a factory for creation of application messages
• [Core] Fixed issues in connection handling
• [Client] Fixed issues with subscribing/unsubscribing (breaking change!)