A modern programming language that makes developers happier.

kotlinlang

The following code doesn’t compile with `1.1-M04` anymore (used to compile with `1.0.5`):
```
interface Logger {
  fun log(message: String)
}

interface WithLogger {
  val logger: Logger
}

class WithLoggerMixin(val name: String) : WithLogger {
  override val logger: Logger = TODO()
}

abstract class AbstractController : WithLogger by WithLoggerMixin("Hello")

class ControllerImpl : AbstractController(), WithLogger by WithLoggerMixin(”Override”)
```
Is it an expected breaking change?