These should be resolved via NuGet, not be checked in.
Config NCrunch if you have it.
Automatically re-gen T4 templates as part of the build - the way it should be. No manual regen when you think you need to, so fewer ways to screw up in hard-to-diagnose ways.
Remove unused reference.
Copy over the build tasks, so that NCrunch can do build-time T4 generation too.
Update to the latest versions of all the nuget dependencies. This required updating some tests due to API changes in FluentAssertions (switching from property asserts to object equivalence asserts).