Installing Theano and CSF or PBN Toolkits on Windows.
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1. Install Miniconda-3 from:
          http://repo.anaconda.com/miniconda
          If you have an older version of Windows, you might need
          an older version of Miniconda3.
          For Windows 7, I had to go back to version 4.1.2
2. After installing Miniconda3, run the Miniconda-3 Prompt by navigating
   from the system start menu:
   System Start Menu -> All Programs -> Anaconda3 -> Anaconda Prompt (Miniconda3)
  
3. In the Miniconda command window, type:
    > conda install theano
    > conda install matplotlib
    > conda install future
    > python -m pip install sklearn
    > python -m pip install playsound

    For some reason, installing Theano there is a file missing: "scan_perform.c"
    I have included this file in the distribution. 
    Go to directory scan_module/ the theano installation directory.
    For me it was C:/Users/PaulB/Miniconda3/Lib/site-packages/theano/scan_module/
    Add a sub-directory called 'c_code' and copy the file scan_perform.c into it.
    In other words:
      C:/Users/PaulB/Miniconda3/Lib/site-packages/theano/scan_module/c_code/scan_perform.c

4. In the Miniconda3 command window, run:
      > set THEANO_FLAGS=mode=FAST_RUN,device=cpu,floatX=float64
   You can also specify 'float32' which runs faster.
   This envoronment variable can also be set permanently using system settings.
   To run the toolkit:
      > python cdbn_gui.py

   It may take a long time to compile functions the first time (took 20 minutes for me).
   I may have missed some Python packages. If an error message appears about a missing Python
   package, try the 'conda' or 'pip' installation as shown above.

Using with AESARA

Aesara is recommended if you do not have a GPU
   
3. In the Miniconda command window, type:
    > python -m pip install aesara
    > set PBNTK_BACKEND=AESARA
    > set AESARA_FLAGS=mode=FAST_RUN,device=cpu,floatX=float64
           (or float32)
    > python cdbn_gui.py