Problems with requirements.txt

[LinguList]

I wanted to test this system, as I may use a good syllabifier for the handling of rhyme data.

Now, the requirements file will first raise an error, since there is scipy=VERSION, but it should be scipy==VERSION.

But then, it seems that the tensorlfow==2.0.0 is not available. At least, PyPi doesn't have it (anymore?): https://pypi.org/search/?q=tensorflow

I am now trying to go with 2.1.0. But I think it would be useful to update and test this again, to make sure the dependencies are in fact available.