Python3 support

[sk-]

Currently pycast can not even be imported in Python 3.

[T-002]

I put it on my todo list for next week.

[clemst]

+1, I would love to have that on python3

[T-002]

It feels like decades, but I finally have time to work on this issue.

All necessary changes will be part of the following PR:
#5

Is there any update on PR #5? I would like to use this with Python 3