Add Python 2.6 support back.

Closes #242.

bin/autojump

@@ -21,7 +21,6 @@
 
 from __future__ import print_function
 
-from argparse import ArgumentParser
 from difflib import SequenceMatcher
 from itertools import chain
 from math import sqrt
@@ -39,6 +38,8 @@ else:
     from itertools import ifilter
     from itertools import imap
 
+from autojump_argparse import ArgumentParser
+
 from autojump_data import dictify
 from autojump_data import entriefy
 from autojump_data import Entry
@@ -206,7 +207,6 @@ def handle_tab_completion(needle, entries):
                 TAB_SEPARATOR)
 
 
-
 def match_anywhere(needles, haystack, ignore_case=False):
     """
     Matches needles anywhere in the path as long as they're in the same (but
@@ -334,7 +334,7 @@ def print_stats(data, data_path):
     print("\ndata:\t %s" % data_path)
 
 
-def main(args):
+def main(args):  # noqa
     config = set_defaults()
 
     # all arguments are mutually exclusive