Nunn Library Rel 1.51

Add support for Recurrent MLP nets

Binaries for Windows of this release have been built by using Microsoft Visual C++ 2015,
so you may need to install Visual C++ Redistributable Packages 2015.
To do this, search for "Visual C++ Redistributable Packages for Visual Studio 2015"
or use the link https://www.microsoft.com/en-us/download/details.aspx?id=48145