ServiceStack/ServiceStack.Text — pull request #357 by flq (2013-07-23 16:17:39+00:00)
Title: Culture issue

### More win in serialization scenarios with regard to the thread's culture…
> If the object will be serialized via ToString, it will be checked
> whether the object implements IFormattable and then a CultureInvariant
> ToString overload is called.

### Tests for the IFormattable usage …
> This commit is separated from the implementation
> as it is unclear whether the Rect class is available in all environments