You've already got clients accessing your RESTful API and now you want to provide new features. You need versioning.

Source code available at: https://github.com/JasperKent/API-Ver...

Topics include:
- ASP.NET Versioning
- Swagger
- Adding, removing and modifying API features
- Reusing existing features in a new C# controller
- Reporting available APIs to the client
- Defaulting to the existing API