Reference the assembly loader in the Main method to stop it being optimized away, and don't reload assemblies once they're already loaded.
make sure the GIL is released in ThreadTest
Use the assembly short name to find the embedded Python.Runtime (other assemblies may reference it with the full name).
Use Assembly.Load(Byte[]) instead of Assembly.LoadFrom.
add C:\Python to PATH
Merge pull request #41 from tonyroberts/develop

merge changes to get npython working again on windows
fixes #39