[Twisted-Python] Python 3

[Itamar Turner-Trauring]

> I found it hard to tell what the level of support is for Python 3 -
> particularly on 64 bit Windows 7.
>
> I found some tickets in trac, but othewise no clear statement.
>
> Is Twisted 10.x OK on Python 3?

No. Supporting Python 3 takes a large amount of effort which, as a mostly
volunteer driven organization, Twisted cannot afford at the moment.

This is the reason most Python projects in general are still only
supporting Python 2 (those written in C are an exception because the
switch is easier).