0.5.2
=====
- Restore 'as_function' bw/compat synonym for 'compile'

0.5.1
=====
- Include 'empty marker' heuristic in markerlib itself

0.5
===
- One final release until it's just a part of distribute

0.4
===
- Cache compiled marker functions with weakref.WeakValueDictionary
- Rename markerlib.as_function to markerlib.compile

0.3
===
- Might work on Python 2.5 (includes needed parts of the ast module from
  Python 2.6+)
- Include 100% test coverage, tox config file

0.1
===
- Initial version
