Python 3 support

[xmnlab]

hey everyone!

it seems that this project was not maintained for a long time, but it is very interesting.

we are thinking about to collaborate to add support to python 3.

what would be the best approach?

• move all the code to python 3 (I like this one)?
• keep compatibility with python 2 y python 3 (I don't like this one), python 2 is not maintained anymore
• create a different project (eg. ttrack3) ?

I am looking forward to hearing your opinions :) all the best

cc @luabida