FluentResults 3.0.0

REMOVED - Dropped support for .NET Standard 1.1, .NET 4.6.1 and .NET 4.5 (details see readme) CHANGED - Introduce interfaces for Error, Success and Reason (precondition to support c# records in FluentResults). The public api uses the new interfaces IError, ISuccess and IReason and not the classes Error, Success and Reason any more REMOVED - Removed the obsolete marked static class Results. Use the static class Result instead. REMOVED - Removed the parameterless constructor of Error and Success REMOVED - Removed the obsolete marked implicit operator from Result TValue to Result. Use an explicit .ToResult() instead. (details see readme)