Target framework dnx451 or net451 in class library projects <p>From what I understand, the target frameworks <code>dnx451</code> and <code>net451</code> both use the desktop .NET Framework 4.5.1. <code>dnx451</code> is especially intended for DNX runtime application and supports ASP.NET 5.</p> <p>If we have a solution with a ASP.NET 5 project and multiple class libraries, should they all target <code>dnx451</code> or does only the web project need to target <code>dnx451</code>? Could the class libraries just target <code>net451</code>?</p>