Drop support for EOL Python 2.7 and 3.4

Author: hugovk

cycler.py

@@ -45,10 +45,6 @@
 from functools import reduce
 from itertools import product, cycle
 from operator import mul, add
-import sys
-
-if sys.version_info < (3,):
-    from itertools import izip as zip
 
 __version__ = '0.10.0'
 

doc/source/conf.py

@@ -272,7 +272,7 @@
 # If true, do not generate a @detailmenu in the "Top" node's menu.
 # texinfo_no_detailmenu = False
 
-intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),
+intersphinx_mapping = {'python': ('https://docs.python.org/3', None),
                        'matplotlb': ('https://matplotlib.org', None)}
 
 # ################ numpydoc config ####################

test_cycler.py

@@ -1,17 +1,11 @@
 from collections import defaultdict
 from operator import add, iadd, mul, imul
 from itertools import product, cycle, chain
-import sys
 
 import pytest
 
 from cycler import cycler, Cycler, concat
 
-if sys.version_info < (3,):
-    from itertools import izip as zip
-    range = xrange  # noqa
-    str = unicode  # noqa
-
 
 def _cycler_helper(c, length, keys, values):
     assert len(c) == length