Don't test 3.5/3.6 for now.

5 jobs from v0.1.3 in 2 minutes and 34 seconds
Status Job ID Name Coverage
  Test
passed #15744
test:2.7

02:17

failed #15745
test:3.3

01:53

passed #15746
test:3.4

00:50

passed #15747
test:pypy-2

00:46

passed #15748
test:pypy-3

00:57