Merge pull request #7170 from jreback/new

CI: use current versions for excel / dateutil / pytz on 3.4 build

Author: jreback

ci/requirements-3.4.txt

@@ -1,8 +1,8 @@
-python-dateutil==2.2
-pytz==2013b
-openpyxl==1.6.2
-xlsxwriter==0.4.6
-xlrd==0.9.2
+python-dateutil
+pytz
+openpyxl
+xlsxwriter
+xlrd
 html5lib==1.0b2
 numpy==1.8.0
 cython==0.20.0
@@ -11,7 +11,7 @@ numexpr==2.3
 tables==3.1.0
 bottleneck==0.8.0
 matplotlib==1.3.1
-patsy==0.2.1
+patsy
 lxml==3.2.1
 sqlalchemy==0.9.3
 pymysql==0.6.1