update to latest pepita
Added tests for nested classes and interface implementations (adapted ClassWithExplicitInterface); also refactored non-public method calls to reflection to be symmetric with the interface implementation tests where dynamic doesn't work
Changed policy for "public only" rewriting (missing ValidationFlags.NonPublic) to include nested classes and implicit/explicit interface implementations too
Added ApprovedTests for InterfaceImplementations, NestedClasses
Refactoring: Inverted if statement and inlined errorMessage (symmetry with PropertyProcessor)