- add "test" command
- use latest (forked) XUnit packages
update package references
[PropertyData] -> [MemberData]
Xunit.Extensions -> Xunit or Xunit.SDK
Moq now available for .NET 4.5 only
- delete a couple of unit tests checking for ArgumentNullException
- provide TestCommon classes in Razor and Razor.Host test projects
- make ReplaceCulture internal because it's a shared source