Drop support for Python 2.4 and 2.5
There would be many advantages to dropping support for Python 2.4, particularly, it would enable the following important features:
- context managers
- absolute imports
Furthermore, much of the backward-compatibility code could be eliminated. Once
#35 is completed, I'd like to explore dropping support for Python 2.4. Are there any steps that can be taken in advance to prepare for this transition? In particular, I'd like the remaining clients of Python 2.4 to continue to have a version of setuptools that's stable (e.g. Setuptools 0.9).