.travis.yml: Add 3.4
.travis.yml: Add 3.4
graingert/isort,wimglenn/isort,wimglenn/isort,leepa/isort,aequitas/isort,gforcada/isort,graingert/isort,AbsoluteMSTR/isort,pahko/isort,jmullan/isort,leepa/isort,pahko/isort,levic/isort,jamesbroadhead/isort,PyCQA/isort,gforcada/isort,PyCQA/isort,AbsoluteMSTR/isort,tomviner/isort,aequitas/isort,jmullan/isort,adamchainz/isort,tomviner/isort,jamesbroadhead/isort,adamchainz/isort,levic/isort