First alpha version of Windows libraries

This is a release of the first version to include Windows support.
The file contains only static python libraries (x64 python 2.7 only).
More releases will follow with more coverage.
Right now, the release comes with the following caveats:

• No .gsf support in windows version
• .all and .xtf parsing probably shaky in windows, needs investigation
• Raytracing through layers not working in windows, draping can still be used (straight rays)

Since the library is compiled with static libraries, all that is needed is python2.7 and numpy
installed. If you install python from the official site
and then install numpy with the accompanying pip version, everything should work
out of the box. Either open a python prompt at the root of the extracted zip file, or add
that directory to your python path (set PYTHONPATH=%PYTHONPATH%;/path/to/extracted/folder).
Then you should be ready to go!