#371 Refactored FakingDelegates spec because of missing test isolation (used the same fake / FakeManager state for all scenarios)
#371, #368 Moved fake manager creation and initialization into the proxy generator (occurs either on the first virtual member call within the constructor or after the constructor has been invoked)
#371 Renamed IInterceptionSink to IFakeCallProcessor, ILazyInterceptionSinkProvider to IFakeCallProcessorProvider, LazyFakeManagerProvider to FakeManagerProvider
#371 Extended the serialization scenarios in the integration tests and made LazyFakeManagerProvider serializable as it's now necessary
Merge pull request #373 from ulrichb/feature/VirtualCallsInCtor_only_bug_368

Moved fake manager creation and initial configuration into the proxy generator (Part I)
#367 - adding exception type and stack trace to failed creation messsage
#367 - cleanup after committing main fix
- using FluentAssertions
- reformatting some tests
- other minor refactorings