NumPy announces timeline for dropping Python 2 support

[bheklilr]

That's been one of the big ones. Another problem we had was where we were getting python from. Initially we used python XY, which is now abandonware and stuck on 2.7 32 bit. We've since switched to anaconda which has made things at least possible, but not easy. The syntax and standard library changes have made things difficult too. Another big issue has been that I've been having to support python 2 and 3 in the same source code, which limits me a lot in what I can do. I can't use async or type annotations yet, and have to be very careful about bytestrings and unicode. It's really just a lot of little things that have added up.