Currently, this YAML package supports building two different versions of code, code based on .NET 2.0-3.5 , and code based on .NET 4.0. Since Powershell is still .NET 2.0 based, we'll strive to keep this verion supported, but moving
forward .NET 4.0 has key parts of the Dynamic Language Runtime integrated into it which makes it much more attractive, and the editor add-in mechanisms for Visual Studio 2010 (based on .NET 4.0) are much more power than the older visual studio version. Both
versions of the library, and the addins for both versions of Visual Studio will build with Visual Studio 2010 moving forward, but that does't require all users (as opposed to developers) to make the move this year.
Building the Code