v2.0.0 Binary SocketCluster codec support

• Jackson JSON parser is used, instead of JSON-java
• SocketCluster Minimal binary (sc-codec-min-bin) codec support
• Underlying nv-websocket-client has been updated to the latest version
• Breaking: callback params now have Jackson JsonNode types, instead of upstream's Object

Important Notes: Due to using jackson-databing this library is significantly bigger in size than upstream (~1.8 Mb), so if binary codec support is not needed, consider using upstream instead.