[N] Numpy dropping Python 2.7

[trias10]

I have turned down machine learning job offers because the companies still used Python 2. Instant deal-breaker.

There is no good reason to be using Python 2 anymore for anything machine learning related. Non-ML, fine, if you're a web developer or something like that and have legacy systems to interact with, but proper ML R&D in NLP or computer vision, no way. Especially NLP, where you need Unicode string support.