pyatspi2 from master is broken?

Hi,

I just tried to update to the latest pyatspi2 from its master branch.

I should note I'm using python3 on Ubuntu 12.04.

It seems to build okay but when I try to import the module in a python3 
session it fails with a traceback about inconsistent use of tabs and 
spacing.

I had to go all the way back to the commit announcing version 2.5.3 
before it would import.  There have been around 10 commits since then 
but none of them will import into python3.

Paul