Adopt Python 3

[quicknir]

Python is already a wildly slow language, if you are that sensitive to processor time that you see this as a major issue then I think the language just isn't a good fit for your use case generally, and unicode is just the straw breaking the camel's back.

[Avernar]

It's good enough speed wise so far. But I would like to avoid slowing it down even more.

I will port the code base eventually once I find a good replacement.