BLD: allow latest version (2.1) of python-dateutil in setup.py close #1851

Author: wesm

RELEASE.rst

@@ -101,6 +101,7 @@ pandas 0.8.2
   - Fix numerical issue leading to square root of negative number in
     rolling_std (#1840)
   - Let Series.str.split accept no arguments (like str.split) (#1859)
+  - Allow user to have dateutil 2.1 installed on a Python 2 system (#1851)
 
 pandas 0.8.1
 ============

setup.py

@@ -50,7 +50,7 @@
 
 else:
     setuptools_kwargs = {
-        'install_requires': ['python-dateutil < 2',
+        'install_requires': ['python-dateutil',
                              'pytz',
                              'numpy >= 1.6'],
         'zip_safe' : False,