Add a setter for timeout on Configuration

pkg/unittest/lib/src/configuration.dart

Index: pkg/unittest/lib/src/configuration.dart
diff --git a/pkg/unittest/lib/src/configuration.dart b/pkg/unittest/lib/src/configuration.dart
index 2a2ea0c9c2d50ab666aa25837b44b77a5f1b5fd5..5a6f21a2886d1f586885fb3505f0435ebc80b36f 100644
--- a/pkg/unittest/lib/src/configuration.dart
+++ b/pkg/unittest/lib/src/configuration.dart
@@ -31,6 +31,7 @@ abstract class Configuration {
   /// How long a [TestCase] can run before it is considered an error.
   /// A [timeout] value of [:null:] means that the limit is infinite.
   Duration get timeout => const Duration(minutes: 2);
+  void set timeout(Duration newTimeout) {}

[Bob Nystrom, 2013/12/11 21:54:19]

Ditch the void.

Also, should the setter actually do what it advertises in the base Configuration
class?

 
   /**
    * Called as soon as the unittest framework becomes initialized. This is done