Sadly, Twitter integration wasn't part of the package when we checked out Windows Phone Mango at the end of last month. The feature has finally been rolled out in the latest developer build of the forthcoming mobile operating system, and WinRumors has taken it for a spin on video. Thrill at the simple setup process through Windows Live. Gasp at integration with the People and Me hubs. Stare in stunned silence at the threaded conversations. All that and more in the video after the bre