* from .Net Core 3.0 SignalR uses System.Text.Json instead of Newtonsoft.Json as protocol, which fails to parse Newtonsoft JToken object in the methods.
* Add utils context and constants
* Seperate proj
* Minor update
* Use messagepack 2.0
* Revert "Use messagepack 2.0"
This reverts commit 584fec8efb.
* Add messagepack test
* Add proj
* Minor update
* Remove useless method
* Remove extra line
* Add more tests
* Add a TODO on version in protocol