Book updated for Python 3.0

After a gap of 3.5 years, I’ve finally updated the [‘A Byte of Python’ book](http://www.swaroopch.com/notes/Python).

The interesting news is that it is updated for the [upcoming Python 3.0 language](http://www.swaroopch.com/notes/Python_en:Introduction#About_Python_3.0) making it probably the first book to be _released_ for Python 3.0.

The book is now a wiki too at [www.swaroopch.com/notes/Python](http://www.swaroopch.com/notes/Python) which means [you can contribute](http://www.swaroopch.com/notes/Notes:Community_Portal) too!