Really pick the last version on Pypi for new version checking.

We were only sorting version string lexicographically and it would have break when
we reach version 0.10.N or 0.N.10
17 jobs for dev in 12 minutes and 31 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #459
check_rst

00:00:34

passed #471
coverage

00:00:49

100.0%
passed #458
flake8

00:00:35

passed #486
py27-django110

00:00:29

passed #487
py27-django17

00:00:29

passed #488
py27-django18

00:00:30

passed #462
py27-django19

00:01:06

passed #467
py34-django110

00:00:56

passed #464
py34-django17

00:01:26

passed #465
py34-django18

00:01:22

passed #466
py34-django19

00:01:13

passed #470
py35-django110

00:00:58

passed #468
py35-django18

00:01:00

passed #469
py35-django19

00:00:58

failed #463
py27-django110

00:00:50

failed #460
py27-django17

00:01:13

failed #461
py27-django18

00:01:13