Remove support for Python < 3.5

5 jobs for master in 4 minutes and 42 seconds
Status Job ID Name Coverage
  Test
passed #99856223
docs

00:01:41

passed #99856222
lint

00:02:32

passed #99856219
python3.5

00:04:34

passed #99856220
python3.6

00:04:42

passed #99856221
python3.7

00:04:24