Theano releases are missing scan_perform.c

I downloaded Theano 1.0.4 for MacOs 10.15 using Anaconda as described here: http://deeplearning.net/software/theano/install_macos.html

When attempting to run a Python program that requires Theano, the program would error out with the message:

76: UserWarning: The file scan_perform.c is not available. This donot happen normally. You are probably in a strangesetup. This mean Theano can not use the cython code for scan. If youwant to remove this warning, use the Theano flag’cxx=’ (set to an empty string) to disable all ccode generation.

I had to do the fix recommended here: https://stackoverflow.com/questions/53423610/how-to-update-scan-cython-code-in-theano

Basically, Theano 1.0.4 is missing the scan_perform.c file.

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