This version of the Contenda .NET SDK updates the SDK to use the new Auth v1 API, and the new Main v3 API. This is sort-of a breaking change - the new API requires you to migrate your user to the new auth environment, and generate a new API key - other than that, everything should work as-is.
The 0.2.0 version update is available on NuGet here https://www.nuget.org/packages/Contenda.Sdk/0.2.0