* Generic paramter on repository lowered to methods so 1 repo instance per class is all that's required.

* Fixed code to use new repository method signatures.

* Add StructureMap NuGet package/dependency to CleanArchitecture.Web since project uses it (currently gets it indirectly via Web's dependnecy on Infrastructure).

* Initial inclusion of AutoFac and making .NET Core use it instead of StructureMap. Ditto the DomainEventDispatcher.

* Remove redundant default.

* Remove StructureMap code and NuGet references.

* Restore comments.