Exceptions are now compatible with both python 2.4 and 3.3,
and we have unit tests to detect regressions.
The syntax for capturing exceptions changed in python 3, but
we need to continue supporting python 2.4 syntax since many
people use tito on RHEL 5, which has python 2.4.
http://docs.python.org/dev/howto/pyporting.html#capturing-the-currently-raised-exception
* If a dev adds an editorconfig plugin to their editor,
automatically configure their editor for code style.
* Specify 4-space softtabs so new code will be compatible
with Python 3.
* Put the same settings in .gitattributes so git diff
highlights whitespace errors.
