Versions should be PEP440 compatible, fixes #521.

jedi/utils.py

@@ -108,7 +108,7 @@ def version_info():
     Returns a namedtuple of Jedi's version, similar to Python's
     ``sys.version_info``.
     """
-    Version = namedtuple('Version', 'major, minor, micro, releaselevel, serial')
+    Version = namedtuple('Version', 'major, minor, micro')
     from jedi import __version__
     tupl = re.findall('[a-z]+|\d+', __version__)
     return Version(*[x if i == 3 else int(x) for i, x in enumerate(tupl)])