- FIX: unit tests
- FIX: documentation fixes
- CHG: DelegateLogger and AggregateLogger throw exception if logging fails
- CHG: LogMessageHandler of DelegateLogger uses additional parameter "succeded" now
- CHG: code cleanups and improvements
- ADD: Errors and LastError properties to IWorkflowExecutionContext interface now
- ADD: overwritten async methods for StreamWrapperBase<TStream>
- ADD: class DispatcherMediator optimized and enhanced
- CHG: code cleanups and improvments