我在哪里可以找到Microsoft.Scripting.Debugging.dll？

since version 2.7, the Microsoft.Scripting.Debugging.dll is not shipped with IronPython any more. Where can I find it - or is there an alternative if I want to implement single stepping for IronPython? All example implementations that I found are from 2010 or older, using the IronPython version with included Microsoft.Scripting.Debugging.dll.since version 2.7, the Microsoft.Scripting.Debu