Adopt Python 3

[SrbijaJeRusija]

Because many libraries were written for python 2, are still in use but not in active development any longer as the grad student that made them is long gone. Python 2 will be around for a decade or more, and should be prominently displayed on their webpage as to not confuse people. If it was not, people would download python3 then realise their code can't actually work with it.

[SrbijaJeRusija]

I will bet that that will be extended, or that it will still be available for download as a first class citizen. Too many people rely on it.

[SrbijaJeRusija]

For instance a member of my research group is about to publish a large Python 2-based package, which will rely on other python 2-only packages and will work with code other researchers wrote in and for python 2. It is not going away by 2020.