Scheduled weekly dependency update for week 19 (#124)
Scheduled weekly dependency update for week 19 (#124)

* Update ipython from 6.3.0 to 6.4.0

* Update mypy from 0.580 to 0.600

* Update pexpect from 4.4.0 to 4.5.0

* Update pycodestyle from 2.3.1 to 2.4.0

* Update python-dateutil from 2.7.2 to 2.7.3

* Update pytz from 2018.3 to 2018.4

* Update sphinx from 1.7.2 to 1.7.4

* Update tox from 2.9.1 to 3.0.0

kobinpy/kobin,c-bata/kobin,c-bata/kobin,kobinpy/kobin